Add Socket Libraries.

Add Posix functions for porting compatibility.
Fix compliance issues with ISO/IEC 9899:199409
New Functions:
  setenv(), fparseln(), GetFileNameFromPath(), rename(),
  realpath(), setprogname(), getprogname(), strlcat(), strlcpy(),
  strsep(), setitimer(), getitimer(), timegm(), getopt(), basename(),
  mkstemp(), ffs(), vsnprintf(), snprintf(), getpass(), usleep(), select(),
  writev(), strcasecmp(), getcwd(), chdir(), tcgetpgrp(), getpgrp(), gettimeofday(),
  bcopy(), 


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12061 6f19259b-4bc3-4df7-8a09-765794883524

StdLib/LibC/Stdio/mkstemp.c

@@ -34,7 +34,7 @@
 #include "nbtool_config.h"
 #endif
 
-#if !HAVE_NBTOOL_CONFIG_H || !HAVE_MKSTEMP
+#if !defined(HAVE_NBTOOL_CONFIG_H) || !defined(HAVE_MKSTEMP)
 
 #include  <sys/EfiCdefs.h>
 #if defined(LIBC_SCCS) && !defined(lint)