Increase the "local variables in a function" limit by a huge amount.

src/parser.cc

Index: src/parser.cc
diff --git a/src/parser.cc b/src/parser.cc
index 0d1ba004b5862a9c6a560f0abeeca769a151ef35..22ac5a5ca1e617db0a0879ee8e5c2c2fde7e70b4 100644
--- a/src/parser.cc
+++ b/src/parser.cc
@@ -2094,7 +2094,9 @@ Block* Parser::ParseVariableDeclarations(
         factory()->NewVariableDeclaration(proxy, mode, scope_, pos);
     Declare(declaration, mode != VAR, CHECK_OK);
     nvars++;
-    if (declaration_scope->num_var_or_const() > kMaxNumFunctionLocals) {
+    // Variable indexes are stored as ints, so we definitely cannot have more
+    // variables than we have indexes for.
+    if (declaration_scope->num_var_or_const() == kMaxInt) {
       ReportMessageAt(scanner()->location(), "too_many_variables");
       *ok = false;
       return NULL;