Add regression test for the deoptimizer immediately followed by gc bug....

Add regression test for the deoptimizer immediately followed by gc bug.

In addition to the regression test I changed the gc-extension to take
a boolean flag specifying if compaction should be used (default is
false, existing tests will not change behaviour)

The regression test is disabled on arm and x64 with crankshaft
enabled. I made a bug to track this:
http://code.google.com/p/v8/issues/detail?id=1094



Committed: http://code.google.com/p/v8/source/detail?r=6619

[Kevin Millikin (Chromium), 2011-02-03 13:45:12]

Cute.  LGTM.