StdLib: Improve robustness of stat() and make basename() a public function.

AppPkg: Refinements to pyconfig.h and port of getpath.c to EDK II.

Signed-off-by: darylm503
Reviewed-by: geekboy15a
Reviewed-by: jljusten


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12508 6f19259b-4bc3-4df7-8a09-765794883524

StdLib/LibC/Uefi/SysCalls.c

@@ -923,7 +923,7 @@ fstat (int fd, struct stat *statbuf)
                   identify the error.
 **/
 int
-stat   (const char *path, void *statbuf)
+stat   (const char *path, struct stat *statbuf)
 {
   int                 fd;
   int                 retval  = -1;