lib: include files using known path

by including headers using "../[header]" when done from C files in
subdirectories, we do not need to specify the lib source dir as an
include path and we reduce the risk of header name collisions with
headers in the SDK using the same file names.

Idea-by: Kai Pastor

Ref: #16949
Closes #16991

lib/vauth/cleartext.c

@@ -25,23 +25,23 @@
  *
  ***************************************************************************/
 
-#include "curl_setup.h"
+#include "../curl_setup.h"
 
 #if !defined(CURL_DISABLE_IMAP) || !defined(CURL_DISABLE_SMTP) ||       \
   !defined(CURL_DISABLE_POP3) || \
   (!defined(CURL_DISABLE_LDAP) && defined(USE_OPENLDAP))
 
 #include <curl/curl.h>
-#include "urldata.h"
+#include "../urldata.h"
 
-#include "vauth/vauth.h"
-#include "warnless.h"
-#include "sendf.h"
-#include "curl_printf.h"
+#include "vauth.h"
+#include "../warnless.h"
+#include "../sendf.h"
+#include "../curl_printf.h"
 
 /* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
+#include "../curl_memory.h"
+#include "../memdebug.h"
 
 /*
  * Curl_auth_create_plain_message()

lib/vauth/cram.c

@@ -24,22 +24,22 @@
  *
  ***************************************************************************/
 
-#include "curl_setup.h"
+#include "../curl_setup.h"
 
 #ifndef CURL_DISABLE_DIGEST_AUTH
 
 #include <curl/curl.h>
-#include "urldata.h"
+#include "../urldata.h"
 
-#include "vauth/vauth.h"
-#include "curl_hmac.h"
-#include "curl_md5.h"
-#include "warnless.h"
-#include "curl_printf.h"
+#include "vauth.h"
+#include "../curl_hmac.h"
+#include "../curl_md5.h"
+#include "../warnless.h"
+#include "../curl_printf.h"
 
 /* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
+#include "../curl_memory.h"
+#include "../memdebug.h"
 
 
 /*

lib/vauth/digest.c

@@ -25,30 +25,30 @@
  *
  ***************************************************************************/
 
-#include "curl_setup.h"
+#include "../curl_setup.h"
 
 #ifndef CURL_DISABLE_DIGEST_AUTH
 
 #include <curl/curl.h>
 
-#include "vauth/vauth.h"
-#include "vauth/digest.h"
-#include "urldata.h"
-#include "curl_base64.h"
-#include "curl_hmac.h"
-#include "curl_md5.h"
-#include "curl_sha256.h"
-#include "curl_sha512_256.h"
-#include "vtls/vtls.h"
-#include "warnless.h"
-#include "strparse.h"
-#include "strcase.h"
-#include "curl_printf.h"
-#include "rand.h"
+#include "vauth.h"
+#include "digest.h"
+#include "../urldata.h"
+#include "../curl_base64.h"
+#include "../curl_hmac.h"
+#include "../curl_md5.h"
+#include "../curl_sha256.h"
+#include "../curl_sha512_256.h"
+#include "../vtls/vtls.h"
+#include "../warnless.h"
+#include "../strparse.h"
+#include "../strcase.h"
+#include "../curl_printf.h"
+#include "../rand.h"
 
 /* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
+#include "../curl_memory.h"
+#include "../memdebug.h"
 
 #ifndef USE_WINDOWS_SSPI
 #define SESSION_ALGO 1 /* for algos with this bit set */

lib/vauth/digest_sspi.c

@@ -25,25 +25,25 @@
  *
  ***************************************************************************/
 
-#include "curl_setup.h"
+#include "../curl_setup.h"
 
 #if defined(USE_WINDOWS_SSPI) && !defined(CURL_DISABLE_DIGEST_AUTH)
 
 #include <curl/curl.h>
 
-#include "vauth/vauth.h"
-#include "vauth/digest.h"
-#include "urldata.h"
-#include "warnless.h"
-#include "curl_multibyte.h"
-#include "sendf.h"
-#include "strdup.h"
-#include "strcase.h"
-#include "strerror.h"
+#include "vauth.h"
+#include "digest.h"
+#include "../urldata.h"
+#include "../warnless.h"
+#include "../curl_multibyte.h"
+#include "../sendf.h"
+#include "../strdup.h"
+#include "../strcase.h"
+#include "../strerror.h"
 
 /* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
+#include "../curl_memory.h"
+#include "../memdebug.h"
 
 /*
 * Curl_auth_is_digest_supported()

lib/vauth/gsasl.c

@@ -24,22 +24,22 @@
  *
  ***************************************************************************/
 
-#include "curl_setup.h"
+#include "../curl_setup.h"
 
 #ifdef USE_GSASL
 
 #include <curl/curl.h>
 
-#include "vauth/vauth.h"
-#include "urldata.h"
-#include "sendf.h"
+#include "vauth.h"
+#include "../urldata.h"
+#include "../sendf.h"
 
 #include <gsasl.h>
 
 /* The last 3 #include files should be in this order */
-#include "curl_printf.h"
-#include "curl_memory.h"
-#include "memdebug.h"
+#include "../curl_printf.h"
+#include "../curl_memory.h"
+#include "../memdebug.h"
 
 bool Curl_auth_gsasl_is_supported(struct Curl_easy *data,
                                   const char *mech,

lib/vauth/krb5_gssapi.c

@@ -25,22 +25,22 @@
  *
  ***************************************************************************/
 
-#include "curl_setup.h"
+#include "../curl_setup.h"
 
 #if defined(HAVE_GSSAPI) && defined(USE_KERBEROS5)
 
 #include <curl/curl.h>
 
-#include "vauth/vauth.h"
-#include "curl_sasl.h"
-#include "urldata.h"
-#include "curl_gssapi.h"
-#include "sendf.h"
-#include "curl_printf.h"
+#include "vauth.h"
+#include "../curl_sasl.h"
+#include "../urldata.h"
+#include "../curl_gssapi.h"
+#include "../sendf.h"
+#include "../curl_printf.h"
 
 /* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
+#include "../curl_memory.h"
+#include "../memdebug.h"
 
 #if defined(__GNUC__) && defined(__APPLE__)
 #pragma GCC diagnostic push

lib/vauth/krb5_sspi.c

@@ -24,21 +24,21 @@
  *
  ***************************************************************************/
 
-#include "curl_setup.h"
+#include "../curl_setup.h"
 
 #if defined(USE_WINDOWS_SSPI) && defined(USE_KERBEROS5)
 
 #include <curl/curl.h>
 
-#include "vauth/vauth.h"
-#include "urldata.h"
-#include "warnless.h"
-#include "curl_multibyte.h"
-#include "sendf.h"
+#include "vauth.h"
+#include "../urldata.h"
+#include "../warnless.h"
+#include "../curl_multibyte.h"
+#include "../sendf.h"
 
 /* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
+#include "../curl_memory.h"
+#include "../memdebug.h"
 
 /*
  * Curl_auth_is_gssapi_supported()

lib/vauth/ntlm.c

@@ -22,7 +22,7 @@
  *
  ***************************************************************************/
 
-#include "curl_setup.h"
+#include "../curl_setup.h"
 
 #if defined(USE_NTLM) && !defined(USE_WINDOWS_SSPI)
 
@@ -35,24 +35,24 @@
 
 #define DEBUG_ME 0
 
-#include "urldata.h"
-#include "sendf.h"
-#include "curl_ntlm_core.h"
-#include "curl_gethostname.h"
-#include "curl_multibyte.h"
-#include "curl_md5.h"
-#include "warnless.h"
-#include "rand.h"
-#include "vtls/vtls.h"
-#include "strdup.h"
+#include "../urldata.h"
+#include "../sendf.h"
+#include "../curl_ntlm_core.h"
+#include "../curl_gethostname.h"
+#include "../curl_multibyte.h"
+#include "../curl_md5.h"
+#include "../warnless.h"
+#include "../rand.h"
+#include "../vtls/vtls.h"
+#include "../strdup.h"
 
-#include "vauth/vauth.h"
-#include "curl_endian.h"
-#include "curl_printf.h"
+#include "vauth.h"
+#include "../curl_endian.h"
+#include "../curl_printf.h"
 
 /* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
+#include "../curl_memory.h"
+#include "../memdebug.h"
 
 
 /* NTLM buffer fixed size, large enough for long user + host + domain */

lib/vauth/ntlm_sspi.c

@@ -22,23 +22,23 @@
  *
  ***************************************************************************/
 
-#include "curl_setup.h"
+#include "../curl_setup.h"
 
 #if defined(USE_WINDOWS_SSPI) && defined(USE_NTLM)
 
 #include <curl/curl.h>
 
-#include "vauth/vauth.h"
-#include "urldata.h"
-#include "curl_ntlm_core.h"
-#include "warnless.h"
-#include "curl_multibyte.h"
-#include "sendf.h"
-#include "strdup.h"
+#include "vauth.h"
+#include "../urldata.h"
+#include "../curl_ntlm_core.h"
+#include "../warnless.h"
+#include "../curl_multibyte.h"
+#include "../sendf.h"
+#include "../strdup.h"
 
 /* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
+#include "../curl_memory.h"
+#include "../memdebug.h"
 
 /*
  * Curl_auth_is_ntlm_supported()

lib/vauth/oauth2.c

@@ -24,22 +24,22 @@
  *
  ***************************************************************************/
 
-#include "curl_setup.h"
+#include "../curl_setup.h"
 
 #if !defined(CURL_DISABLE_IMAP) || !defined(CURL_DISABLE_SMTP) || \
   !defined(CURL_DISABLE_POP3) || \
   (!defined(CURL_DISABLE_LDAP) && defined(USE_OPENLDAP))
 
 #include <curl/curl.h>
-#include "urldata.h"
+#include "../urldata.h"
 
-#include "vauth/vauth.h"
-#include "warnless.h"
-#include "curl_printf.h"
+#include "vauth.h"
+#include "../warnless.h"
+#include "../curl_printf.h"
 
 /* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
+#include "../curl_memory.h"
+#include "../memdebug.h"
 
 /*
  * Curl_auth_create_oauth_bearer_message()

lib/vauth/spnego_gssapi.c

@@ -24,23 +24,23 @@
  *
  ***************************************************************************/
 
-#include "curl_setup.h"
+#include "../curl_setup.h"
 
 #if defined(HAVE_GSSAPI) && defined(USE_SPNEGO)
 
 #include <curl/curl.h>
 
-#include "vauth/vauth.h"
-#include "urldata.h"
-#include "curl_base64.h"
-#include "curl_gssapi.h"
-#include "warnless.h"
-#include "curl_multibyte.h"
-#include "sendf.h"
+#include "vauth.h"
+#include "../urldata.h"
+#include "../curl_base64.h"
+#include "../curl_gssapi.h"
+#include "../warnless.h"
+#include "../curl_multibyte.h"
+#include "../sendf.h"
 
 /* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
+#include "../curl_memory.h"
+#include "../memdebug.h"
 
 #if defined(__GNUC__) && defined(__APPLE__)
 #pragma GCC diagnostic push

lib/vauth/spnego_sspi.c

@@ -24,23 +24,23 @@
  *
  ***************************************************************************/
 
-#include "curl_setup.h"
+#include "../curl_setup.h"
 
 #if defined(USE_WINDOWS_SSPI) && defined(USE_SPNEGO)
 
 #include <curl/curl.h>
 
-#include "vauth/vauth.h"
-#include "urldata.h"
-#include "curl_base64.h"
-#include "warnless.h"
-#include "curl_multibyte.h"
-#include "sendf.h"
-#include "strerror.h"
+#include "vauth.h"
+#include "../urldata.h"
+#include "../curl_base64.h"
+#include "../warnless.h"
+#include "../curl_multibyte.h"
+#include "../sendf.h"
+#include "../strerror.h"
 
 /* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
+#include "../curl_memory.h"
+#include "../memdebug.h"
 
 /*
  * Curl_auth_is_spnego_supported()

lib/vauth/vauth.c

@@ -22,19 +22,19 @@
  *
  ***************************************************************************/
 
-#include "curl_setup.h"
+#include "../curl_setup.h"
 
 #include <curl/curl.h>
 
 #include "vauth.h"
-#include "urldata.h"
-#include "strcase.h"
-#include "curl_multibyte.h"
-#include "curl_printf.h"
+#include "../urldata.h"
+#include "../strcase.h"
+#include "../curl_multibyte.h"
+#include "../curl_printf.h"
 
 /* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
+#include "../curl_memory.h"
+#include "../memdebug.h"
 
 /*
  * Curl_auth_build_spn()

lib/vauth/vauth.h

@@ -26,7 +26,7 @@
 
 #include <curl/curl.h>
 
-#include "bufref.h"
+#include "../bufref.h"
 
 struct Curl_easy;