Cleanup of http://codereview.chromium.org/8101....

Cleanup of http://codereview.chromium.org/8101.

Changed the catcher_ field to a boolean value and renamed it. Modified the
propagation of the external caught exception to also clear the current
TryCatch if there is no exception as it might hold an exception which has
been bypassed by code in a finally block.

Minor formatting changes to a test.

Committed: http://code.google.com/p/v8/source/detail?r=576

[Kasper Lund, 2008-10-23 14:43:26]

Looks better to me. It still seems waaaay too complicated, but it's certainly
better.

[Christian Plesner Hansen, 2008-10-23 15:37:36]

Lgtm