[rfa] Use shared signals/signals.c in gdbserver

[Andrew Cagney]

> 2002-03-24  Daniel Jacobowitz  <drow@mvista.com>
> 
> * gdbserver/server.c (main): Call target_signal_to_host_p
> 	and target_signal_to_host on signals received from the remote.
> 	* gdbserver/remote-utils.c (prepare_resume_reply): Call
> 	target_signal_from_host on signals sent to the remote.
> 	* gdbserver/server.h: Add prototypes.  Include "gdb/signals.h".
> 	* gdbserver/Makefile.in: Add signals.o.  Add -I${INCLUDE_DIR}.
> 

yep, by me.
Andrew