Don't try an indexOf() when the search string is bigger than the string. The...

Don't try an indexOf() when the search string is bigger than the string.  The current code will spend a bunch of time trying to match, even though we should know a match is impossible.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@348 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/string.js

@@ -340,6 +340,7 @@ function ApplyReplacementFunction(replace, captures, subject) {
   }
   if (index < 0) index = 0;
   if (index > str.length) index = str.length;
+  if (searchStr.length + index > str.length) return -1;
   return %StringIndexOf(str, searchStr, index);
 }, DONT_ENUM);