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

test/mjsunit/regress/regress-2273.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 61 matching lines @@
   CheckCoersion.call(undefined);
   CheckCoersion.call(null);
   [1].forEach(CheckCoersion, "foo");
   [2].every(CheckCoersion, "foo");
   [3].filter(CheckCoersion, "foo");
   [4].some(CheckCoersion, 42);
   [5].map(CheckCoersion, 42);
 };
 strict_mode();
 
-function classic_mode() {
+function sloppy_mode() {
   CheckStringReceiver.call("foo");
   CheckNumberReceiver.call(42);
   CheckUndefinedReceiver.call(undefined);
   CheckNullReceiver.call(null);
   [1].forEach(CheckStringReceiver, "foo");
   [2].every(CheckStringReceiver, "foo");
   [3].filter(CheckStringReceiver, "foo");
   [4].some(CheckNumberReceiver, 42);
   [5].map(CheckNumberReceiver, 42);
 
   CheckCoersion.call("foo");
   CheckCoersion.call(42);
   CheckCoersion.call(undefined);
   CheckCoersion.call(null);
   [1].forEach(CheckCoersion, "foo");
   [2].every(CheckCoersion, "foo");
   [3].filter(CheckCoersion, "foo");
   [4].some(CheckCoersion, 42);
   [5].map(CheckCoersion, 42);
 };
-classic_mode();
+sloppy_mode();