[patch/hppa] new in_epilogue_p method

[Randolph Chung]

In reference to a message from Randolph Chung, dated Dec 03:
> This patch teaches gdb about the hppa epilogue sequences, and fixes a
> bug in software watchpoint handling. It's a bit ugly since there's no
> clearly defined way to identify the epilogue... possibly we can do
> better than this for dwarf2-enabled targets when we support dwarf2
> unwinding ...
> 
> i'll give this a few days for comments

i've committed this now.

thanks
randolph
-- 
Randolph Chung
Debian GNU/Linux Developer, hppa/ia64 ports
http://www.tausq.org/