Change _UPTi_find_unwind_table to return an integer.

This keeps the definition on IA64 and all the other architectures in sync with
the declaration of _UPTi_find_unwind_table. This also mimics the behaviour of
what's done for local unwinding and allows the function to provide more than
one way to undwind.

Signed-off-by: Ken Werner <ken.werner@linaro.org>
3 files changed