Speed up a regression test regress-3249650.js so it does not timeout.

Speed up a regression test regress-3249650.js so it does not timeout.

Committed: http://code.google.com/p/v8/source/detail?r=6228

[William Hesse, 2011-01-07 12:21:06]

This test now takes 10 seconds on x64 with the slowest settings, <30 seconds on
the slowest arm simulator settings.  It hits all the optimizations and
deoptimizations needed on ia32 and arm, for testing.

[Søren Thygesen Gjesse, 2011-01-07 12:59:03]

LGTM