Change dos line endings to unix line endings in a number of mjsunit test file...

test/mjsunit/debug-clearbreakpointgroup.js

 // Copyright 2008 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 97 matching lines @@
 assertEquals(3, breakpoints.length);
 var breakpointNumbers = breakpoints.map(
     function(scriptBreakpoint) { return scriptBreakpoint.number(); },
     breakpointNumbers);
 
 // Check that all breakpoints from group 1 were deleted and all the
 // rest are preserved.
 assertEquals([bp2, bp3, bp5].sort(), breakpointNumbers.sort());
 
 assertFalse(exception, "exception in listener");