MIPS: port Replace boolean indications of strict mode by an enum value.

Port r9746 (804e4e4)

BUG=
TEST=

Review URL: http://codereview.chromium.org/8390030
Patch from Paul Lind <plind44@gmail.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9784 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/mips/full-codegen-mips.cc

@@ -1115,7 +1115,7 @@ void FullCodeGenerator::EmitNewClosure(Handle<SharedFunctionInfo> info,
       !pretenure &&
       scope()->is_function_scope() &&
       info->num_literals() == 0) {
-    FastNewClosureStub stub(info->strict_mode() ? kStrictMode : kNonStrictMode);
+    FastNewClosureStub stub(info->strict_mode_flag());
     __ li(a0, Operand(info));
     __ push(a0);
     __ CallStub(&stub);