Upstream-Status: Pending

Don't always define LONG64 for AMD64
    
X32 defines __amd64__/amd64 with 32bit long.  We should simply check
__LP64__ before defining LONG64 without checking __amd64__/amd64.

This fixes compilation with x32 toolchain.

Received this patch from H.J. Lu <hjl.tools@gmail.com>
Signed-Off-By: Nitin A Kamble <nitin.a.kamble@intel.com> 2011/12/1

--- xproto-7.0.22/Xmd.h.x32	2009-07-11 04:19:50.000000000 -0700
+++ xproto-7.0.22/Xmd.h	2011-11-30 17:14:19.290395893 -0800
@@ -62,7 +62,6 @@ SOFTWARE.
      defined(__ia64__) || defined(ia64) || \
      defined(__sparc64__) || \
      defined(__s390x__) || \
-     defined(__amd64__) || defined(amd64) || \
      defined(__powerpc64__)
 #  define LONG64				/* 32/64-bit architecture */
 # endif