[hppa-hpux] Signal frame unwinding support for hppa64-hp-hpux11.11

[Randolph Chung]

>>2005-11-15  Randolph Chung  <tausq@debian.org>
>>
>>	* hppa-hpux-tdep.c (hppa_hpux_sigtramp_frame_unwind_cache): Use 
>>	HPPA_HPUX_SS_* constants.  Ensure "off" is large enough to hold 
>>	64-bit offset.  Set proper signal context offset for 64-bit 
>>	programs.  Set pc properly for signal frames.
> 
> 
> Looks good to me!  Thanks for making those changes.

I've checked this in now.

randolph