tidy-up: miscellaneous

- apply more clang-format.
- lib/version: use `CURL_ARRAYSIZE()`.
- INSTALL-CMAKE.md: sync-up an option description with others.
- examples: delete unused main args.
- examples/ftpgetinfo: document `_CRT_SECURE_NO_WARNINGS` symbol.
- delete remaining stray duplicate lines.
- acinclude.m4: drop an unnecessary x-hack.
- vtls/mbedtls: join a URL split into two lines.
- src/tool_cb_see: add parentheses around macro expressions.
- src/tool_operate: move literals to the right side of comparisons.
- libtests: sync up fopen/fstat error messages between tests.
- curl_setup.h: replace `if ! defined __LP64` with `ifndef __LP64`.
  I assume it makes no difference on Tandem systems, as the latter form
  is already used in `include/curl/system.h`.

Closes #20018

lib/vtls/mbedtls.c

@@ -229,9 +229,9 @@ static const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_fr = {
   1024,      /* RSA min key len */
 };
 
-/* See https://web.archive.org/web/20200921194007/tls.mbed.org/discussions/
-   generic/howto-determine-exact-buffer-len-for-mbedtls_pk_write_pubkey_der
-*/
+/* See:
+ * https://web.archive.org/web/20200921194007/tls.mbed.org/discussions/generic/howto-determine-exact-buffer-len-for-mbedtls_pk_write_pubkey_der
+ */
 #define RSA_PUB_DER_MAX_BYTES   (38 + 2 * MBEDTLS_MPI_MAX_SIZE)
 #define ECP_PUB_DER_MAX_BYTES   (30 + 2 * MBEDTLS_ECP_MAX_BYTES)
 

lib/vtls/openssl.c

@@ -1443,7 +1443,6 @@ fail:
   return 1;
 }
 
-
 static CURLcode client_cert(struct Curl_easy *data,
                             SSL_CTX* ctx,
                             char *cert_file,
@@ -3629,7 +3628,6 @@ static CURLcode ossl_init_ssl(struct ossl_ctx *octx,
                                      alpns_requested, sess_reuse_cb);
 }
 
-
 static CURLcode ossl_init_method(struct Curl_cfilter *cf,
                                  struct Curl_easy *data,
                                  struct ssl_peer *peer,
@@ -3828,7 +3826,7 @@ CURLcode Curl_ossl_ctx_init(struct ossl_ctx *octx,
      OpenSSL supports processing "jumbo TLS record" (8 TLS records) in one go
      for some algorithms, so match that here.
      Experimentation shows that a slightly larger buffer is needed
-      to avoid short reads.
+     to avoid short reads.
 
      However using a large buffer (8 packets) actually decreases performance.
      4 packets is better.
@@ -4669,7 +4667,6 @@ out:
 }
 #endif /* ! CURL_DISABLE_VERBOSE_STRINGS */
 
-
 #ifdef USE_APPLE_SECTRUST
 struct ossl_certs_ctx {
   STACK_OF(X509) *sk;

lib/vtls/schannel.c

@@ -70,8 +70,8 @@
 #define SCH_DEV_SHOWBOOL(x)                                   \
   infof(data, "schannel: " #x " %s", (x) ? "TRUE" : "FALSE");
 #else
-#define SCH_DEV(x) do { } while(0)
-#define SCH_DEV_SHOWBOOL(x) do { } while(0)
+#define SCH_DEV(x) do {} while(0)
+#define SCH_DEV_SHOWBOOL(x) do {} while(0)
 #endif
 
 /* Offered by mingw-w64 v8+. MS SDK 7.0A+. */

lib/vtls/wolfssl.c

@@ -36,7 +36,6 @@
 #include <wolfssl/options.h>
 #include <wolfssl/version.h>
 
-
 #if LIBWOLFSSL_VERSION_HEX < 0x03004006 /* wolfSSL 3.4.6 (2015) */
 #error "wolfSSL version should be at least 3.4.6"
 #endif

lib/vtls/x509asn1.c

@@ -92,7 +92,6 @@
 /* #define CURL_ASN1_CHARACTER_STRING      29 */
 #define CURL_ASN1_BMP_STRING            30
 
-
 #ifdef WANT_EXTRACT_CERTINFO
 /* ASN.1 OID table entry. */
 struct Curl_OID {