MIPS: Add a level of indirection to exception handler addresses.

MIPS: Add a level of indirection to exception handler addresses.

Port r9977 (9aded78be4).
Note: This is the port of the reapplied patch, not the original.

Original commit message:

To support deoptimization of exception handlers, the handler address in the
stack is converted to a pair of code object and an index into a separate
table of code offsets.  The index part is invariant under deoptimization.
The index is packed into the handler state field so that handler size does
not change.

BUG=
TEST=

Committed: http://code.google.com/p/v8/source/detail?r=10039

[kisg, 2011-11-17 21:13:26]

Rebased on current (r10024) revision. This commit is required for the MIPS
architecture to build.

[Kevin Millikin (Chromium), 2011-11-21 14:03:54]

Thanks for the patch.  Looks good to me, I will land it.