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/Include/sys/cdefs_aout.h

@@ -11,12 +11,7 @@
 #define _C_LABEL(x)   __CONCAT(_,x)
 #define _C_LABEL_STRING(x)  "_"x
 
-#if __STDC__
-#define ___RENAME(x)  __asm(___STRING(_C_LABEL(x)))
-#else
-#define ___RENAME(x)  ____RENAME(_/**/x)
-#define ____RENAME(x) __asm(___STRING(x))
-#endif
+#define ___RENAME(x)
 
 #define __indr_reference(sym,alias) /* nada, since we do weak refs */