CryptoPkg: Clean-up CRT Library Wrapper.

Cleaning-up CRT Library Wrapper for the third-party cryptography
library building. The changes includes
1. Rename OpenSslSupport.h to CrtLibSupport.h for future alternative
   crypto provider support.
2. Remove all un-referenced CRT APIs and headers.

(NOTE: More cleans-up could be possible after OpenSSL integrate the
      extra PR request: https://github.com/openssl/openssl/pull/2961)

Cc: Ting Ye <ting.ye@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Gary Lin <glin@suse.com>
Cc: Ronald Cron <ronald.cron@arm.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Qin Long <qin.long@intel.com>
Reviewed-by: Ting Ye <ting.ye@intel.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Gary Lin <glin@suse.com>

CryptoPkg/Library/BaseCryptLib/SysCall/CrtWrapper.c

@@ -2,7 +2,7 @@
   C Run-Time Libraries (CRT) Wrapper Implementation for OpenSSL-based
   Cryptographic Library.
 
-Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -13,7 +13,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 **/
 
-#include <OpenSslSupport.h>
+#include <CrtLibSupport.h>
 
 int errno = 0;
 
@@ -136,6 +136,30 @@ char *strrchr (const char *str, int c)
   }
 }
 
+/* Compare first n bytes of string s1 with string s2, ignoring case */
+int strncasecmp (const char *s1, const char *s2, size_t n)
+{
+  int Val;
+
+  ASSERT(s1 != NULL);
+  ASSERT(s2 != NULL);
+
+  if (n != 0) {
+    do {
+      Val = tolower(*s1) - tolower(*s2);
+      if (Val != 0) {
+        return Val;
+      }
+      ++s1;
+      ++s2;
+      if (*s1 == '\0') {
+        break;
+      }
+    } while (--n != 0);
+  }
+  return 0;
+}
+
 /* Read formatted data from a string */
 int sscanf (const char *buffer, const char *format, ...)
 {
@@ -146,6 +170,70 @@ int sscanf (const char *buffer, const char *format, ...)
   return 0;
 }
 
+/* Maps errnum to an error-message string */
+char * strerror (int errnum)
+{
+  return NULL;
+}
+
+/* Computes the length of the maximum initial segment of the string pointed to by s1
+   which consists entirely of characters from the string pointed to by s2. */
+size_t strspn (const char *s1 , const char *s2)
+{
+  UINT8   Map[32];
+  UINT32  Index;
+  size_t  Count;
+
+  for (Index = 0; Index < 32; Index++) {
+    Map[Index] = 0;
+  }
+
+  while (*s2) {
+    Map[*s2 >> 3] |= (1 << (*s2 & 7));
+    s2++;
+  }
+
+  if (*s1) {
+    Count = 0;
+    while (Map[*s1 >> 3] & (1 << (*s1 & 7))) {
+      Count++;
+      s1++;
+    }
+
+    return Count;
+  }
+
+  return 0;
+}
+
+/* Computes the length of the maximum initial segment of the string pointed to by s1
+   which consists entirely of characters not from the string pointed to by s2. */
+size_t strcspn (const char *s1, const char *s2)
+{
+  UINT8  Map[32];
+  UINT32 Index;
+  size_t Count;
+
+  for (Index = 0; Index < 32; Index++) {
+    Map[Index] = 0;
+  }
+
+  while (*s2) {
+    Map[*s2 >> 3] |= (1 << (*s2 & 7));
+    s2++;
+  }
+
+  Map[0] |= 1;
+
+  Count   = 0;
+  while (!(Map[*s1 >> 3] & (1 << (*s1 & 7)))) {
+    Count ++;
+    s1++;
+  }
+
+  return Count;
+}
+
 //
 // -- Character Classification Routines --
 //
@@ -277,12 +365,6 @@ char *getenv (const char *varname)
 // -- Stream I/O Routines --
 //
 
-/* Write formatted output using a pointer to a list of arguments */
-int vfprintf (FILE *stream, const char *format, VA_LIST arg)
-{
-  return 0;
-}
-
 /* Write data to a stream */
 size_t fwrite (const void *buffer, size_t size, size_t count, FILE *stream)
 {
@@ -303,36 +385,6 @@ int BIO_snprintf(char *buf, size_t n, const char *format, ...)
   return 0;
 }
 
-void *UI_OpenSSL(void)
-{
-  return NULL;
-}
-
-int X509_load_cert_file (VOID *ctx, const char *file, int type)
-{
-  return 0;
-}
-
-int X509_load_crl_file (VOID *ctx, const char *file, int type)
-{
-  return 0;
-}
-
-int chmod (const char *c, mode_t m)
-{
-  return -1;
-}
-
-int close (int f)
-{
-  return -1;
-}
-
-void closelog (void)
-{
-
-}
-
 #ifdef __GNUC__
 
 typedef
@@ -341,7 +393,6 @@ VOID
   VOID
   ) __attribute__((__noreturn__));
 
-
 STATIC
 VOID
 EFIAPI
@@ -351,8 +402,7 @@ NopFunction (
 {
 }
 
-
-void exit (int e)
+void abort (void)
 {
   NoReturnFuncPtr NoReturnFunc;
 
@@ -363,8 +413,9 @@ void exit (int e)
 
 #else
 
-void exit (int e)
+void abort (void)
 {
+  // Do nothing
 }
 
 #endif
@@ -384,16 +435,6 @@ size_t fread (void *b, size_t c, size_t i, FILE *f)
   return 0;
 }
 
-int fputs (const char *s, FILE *f)
-{
-  return 0;
-}
-
-int fprintf (FILE *f, const char *s, ...)
-{
-  return 0;
-}
-
 uid_t getuid (void)
 {
   return 0;
@@ -414,46 +455,6 @@ gid_t getegid (void)
   return 0;
 }
 
-off_t lseek (int a, off_t o, int d)
-{
-  return 0;
-}
-
-void openlog (const char *c, int a, int b)
-{
-
-}
-
-ssize_t read (int f, void *b, size_t c)
-{
-  return 0;
-}
-
-int stat (const char *c, struct stat *s)
-{
-  return -1;
-}
-
-int strcasecmp (const char *c, const char *s)
-{
-  return 0;
-}
-
-int strncasecmp (const char *c, const char *s, size_t l)
-{
-  return 0;
-}
-
-void syslog (int a, const char *c, ...)
-{
-
-}
-
-ssize_t write (int f, const void *b, size_t l)
-{
-  return 0;
-}
-
 int printf (char const *fmt, ...)
 {
   return 0;