[Patch] MIPS: Simplify unwinding through signal frames.

[Eric Christopher]

>
> OK to commit?
>
> gcc:
> 2006-11-18  David Daney  <ddaney@avtrex.com>
>
> 	* config/mips/linux-unwind.h (mips_fallback_frame_state): Adjust
> 	PC to point to following instruction.
>
> libjava:
> 2006-11-18  David Daney  <ddaney@avtrex.com>
>
> 	* include/mips-signal.h (sys/syscall.h): Do not include.
> 	(sig_ucontext_t): Removed.
> 	(MAKE_THROW_FRAME): Changed to be a nop.
> 	(_INIT_SIG_HANDLER): New macro.
> 	(INIT_SEGV): Rewrote to use _INIT_SIG_HANDLER.
> 	(INIT_FPE): Same.
>
>

OK.

-eric