This patch add code to make I386 architecture support process record and replay.

2009-03-21  Hui Zhu  <teawater@gmail.com>

	I386 architecture process record and replay support.

	* i386-tdep.c (PREFIX_REPZ, PREFIX_REPNZ, PREFIX_LOCK,
	PREFIX_DATA, PREFIX_ADDR): New macros. Help decode the i386
	instruction set.
	(aflag, dflag, override, modrm, mod, reg, rm, ot,
	i386_record_pc): New variables. Ditto.
	(i386_record_modrm, i386_record_lea_modrm_addr,
	i386_record_lea_modrm): New functions. Ditto.
	(i386_process_record): New function. Parse the instruction in
	address "addr" and record the values of registers and memory
	that will be changed by this instruction.
	(i386_gdbarch_init): Set "i386_process_record" to GDBARCH
	"process_record" interface.
	* i386-tdep.h (gdbarch_tdep): New function pointers
	"i386_intx80_record" and "i386_sysenter_record" that point to
	the function that can record "intx80" and "sysenter" execute
	log.

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

	2008-08-01  Michael Snyder  <msnyder@vmware.com>
	* i386-tdep.c (i386_record_lea_modrm): Spelling fix.