Allow larger regexp stack if necessary, which includes specific layout tests.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1175 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/regexp-stack.h

@@ -79,7 +79,7 @@ class RegExpStack {
   static const size_t kMinimumStackSize = 1 * KB;
 
   // Maximal size of allocated stack area.
-  static const size_t kMaximumStackSize = 256 * KB;
+  static const size_t kMaximumStackSize = 64 * MB;
 
   // Structure holding the allocated memory, size and limit.
   struct ThreadLocal {