Use /usr/bin/env trick to find python.  Patch by Krister Walfridsson.

llvm-svn: 75271
diff --git a/clang/utils/FindSpecRefs b/clang/utils/FindSpecRefs
index c74ca3d..9097f93 100755
--- a/clang/utils/FindSpecRefs
+++ b/clang/utils/FindSpecRefs
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 
 import os
 import re