Make sure files end with exactly one new line and police this in presubmit.

test/mjsunit/global-load-from-eval-in-with.js

 // Copyright 2009 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 38 matching lines @@
 test({ y: 42 }, "function f() { function g() { assertEquals(27, x) }; g() }; f();");
 
 // Test shadowing in local scope inside an eval scope with eval calls in the eval scopes.
 test({ x: 42 }, "function f() { eval('1'); assertEquals(42, x) }; f();");
 test({ y: 42 }, "function f() { eval('1'); assertEquals(27, x) }; f();");
 
 // Test shadowing in local scope inside an eval scope with eval calls
 // in the eval scopes.  Deeper nesting this time.
 test({ x: 42 }, "function f() { function g() { eval('1'); assertEquals(42, x) }; g() }; f();");
 test({ y: 42 }, "function f() { function g() { eval('1'); assertEquals(27, x) }; g() }; f();");
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