Landing for Ryan Dahl.

Remove const from BitCast.

Fixes build for old GCCs.

Review URL: http://codereview.chromium.org/3130033/show

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5305 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/utils.h

@@ -740,7 +740,7 @@ inline Dest BitCast(const Source& source) {
 }
 
 template <class Dest, class Source>
-inline Dest BitCast(Source* const & source) {
+inline Dest BitCast(Source* source) {
     return BitCast<Dest>(reinterpret_cast<uintptr_t>(source));
 }