mem-include-scan: verify memory #includes

If we use memory functions (malloc, free, strdup etc) in C sources in
libcurl and we fail to include curl_memory.h or memdebug.h we either
fail to properly support user-provided memory callbacks or the memory
leak system of the test suite fails.

After Ajit's report of a failure in the first category in http_proxy.c,
I spotted a few in the second category as well. These problems are now
tested for by test 1132 which runs a perl program that scans for and
attempts to check that we use the correct include files if a memory
related function is used in the source code.

Reported by: Ajit Dhumale
Bug: http://curl.haxx.se/mail/lib-2012-11/0125.html

lib/dict.c

@@ -67,10 +67,10 @@
 #define _MPRINTF_REPLACE /* use our functions only */
 #include <curl/mprintf.h>
 
+#include "curl_memory.h"
 /* The last #include file should be: */
 #include "memdebug.h"
 
-
 /*
  * Forward declarations.
  */

lib/gopher.c

@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -70,10 +70,10 @@
 #define _MPRINTF_REPLACE /* use our functions only */
 #include <curl/mprintf.h>
 
+#include "curl_memory.h"
 /* The last #include file should be: */
 #include "memdebug.h"
 
-
 /*
  * Forward declarations.
  */

lib/http_proxy.c

@@ -45,6 +45,7 @@
 
 #include "curlx.h"
 
+#include "curl_memory.h"
 /* The last #include file should be: */
 #include "memdebug.h"
 

lib/idn_win32.c

@@ -30,6 +30,10 @@
 
 #include "curl_multibyte.h"
 
+#include "curl_memory.h"
+/* The last #include file should be: */
+#include "memdebug.h"
+
 #ifdef WANT_IDN_PROTOTYPES
 WINBASEAPI int WINAPI IdnToAscii(DWORD, const WCHAR *, int, WCHAR *, int);
 WINBASEAPI int WINAPI IdnToUnicode(DWORD, const WCHAR *, int, WCHAR *, int);

lib/md5.c

@@ -28,9 +28,13 @@
 #include "curl_hmac.h"
 #include "warnless.h"
 
+#include "curl_memory.h"
+
 #if defined(USE_GNUTLS_NETTLE)
 
 #include <nettle/md5.h>
+/* The last #include file should be: */
+#include "memdebug.h"
 
 typedef struct md5_ctx MD5_CTX;
 
@@ -54,6 +58,8 @@ static void MD5_Final(unsigned char digest[16], MD5_CTX * ctx)
 #elif defined(USE_GNUTLS)
 
 #include <gcrypt.h>
+/* The last #include file should be: */
+#include "memdebug.h"
 
 typedef gcry_md_hd_t MD5_CTX;
 
@@ -436,6 +442,9 @@ static void Decode (UINT4 *output,
 
 #endif /* CRYPTO LIBS */
 
+/* The last #include file should be: */
+#include "memdebug.h"
+
 const HMAC_params Curl_HMAC_MD5[] = {
   {
     (HMAC_hinit_func) MD5_Init,           /* Hash initialization function. */

lib/non-ascii.c

@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -24,12 +24,16 @@
 
 #ifdef CURL_DOES_CONVERSIONS
 
+#include <curl/curl.h>
+
 #include "non-ascii.h"
 #include "formdata.h"
 #include "sendf.h"
 #include "urldata.h"
 
-#include <curl/curl.h>
+#include "curl_memory.h"
+/* The last #include file should be: */
+#include "memdebug.h"
 
 #ifdef HAVE_ICONV
 #include <iconv.h>

lib/nwlib.c

@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -32,6 +32,9 @@
 #include <nks/thread.h>
 #include <nks/synch.h>
 
+#include "curl_memory.h"
+/* The last #include file should be: */
+#include "memdebug.h"
 
 typedef struct
 {

lib/strdup.c

@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -19,7 +19,9 @@
  * KIND, either express or implied.
  *
  ***************************************************************************/
-
+/*
+ * This file is 'mem-include-scan' clean. See test 1132.
+ */
 #include "setup.h"
 
 #include "strdup.h"

lib/strerror.c

@@ -44,6 +44,9 @@
 #define _MPRINTF_REPLACE /* use our functions only */
 #include <curl/mprintf.h>
 
+#include "curl_memory.h"
+/* The last #include file should be: */
+#include "memdebug.h"
 
 const char *
 curl_easy_strerror(CURLcode error)