Mode clean-up pt 1: rename classic/non-strict mode to sloppy mode

src/parser.h

Index: src/parser.h
diff --git a/src/parser.h b/src/parser.h
index 5a5c734ae3c4e3587d750e5a794051590ea7321e..244c4ed760e7cba6a77deec71e84b5fef5137618 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -68,7 +68,7 @@ class FunctionEntry BASE_EMBEDDED {
   int literal_count() { return backing_[kLiteralCountIndex]; }
   int property_count() { return backing_[kPropertyCountIndex]; }
   LanguageMode language_mode() {
-    ASSERT(backing_[kLanguageModeIndex] == CLASSIC_MODE ||
+    ASSERT(backing_[kLanguageModeIndex] == SLOPPY_MODE ||
            backing_[kLanguageModeIndex] == STRICT_MODE ||
            backing_[kLanguageModeIndex] == EXTENDED_MODE);
     return static_cast<LanguageMode>(backing_[kLanguageModeIndex]);