Avoid arbitrarily deep recursion in Array.sort.

Avoid arbitrarily deep recursion in Array.sort.

BUG=v8:2185
Committed: http://code.google.com/p/v8/source/detail?r=11839

[Erik Corry, 2012-06-16 07:19:01]

This fix is 90% indentation, but the code review tool does not show it very
well.  There is just a while loop around the whole function and instead of the
double recursion there is a recursion and an iteration, limiting the recursion
to the log of the length.

[Michael Starzinger, 2012-06-18 09:22:11]

LGTM.