This patch is add two function pointers interface to GDB architecture
support layer for process record and replay.

After use this patch, still need:
cd src/gdb/
./gdbarch.sh
cp new-gdbarch.c gdbarch.c
cp new-gdbarch.h gdbarch.h

2009-01-08  Hui Zhu  <teawater@gmail.com>

	GDBARCH interface for process record and replay.

	* gdbarch.sh (process_record): This interface point to the
	function that records the inferior execute log.
	(process_record_dasm): This interface points to the function
	that will be called to set inferior status according to the
	instruction in replay mode.

	2008-12-28  Michael Snyder  <msnyder@vmware.com>
	* Comments, spelling, white space clean-ups.