gdb: Add process record and replay support for s390.

gdb: Add process record and replay support for s390.

gdb/ChangeLog:

	PR/18376
	* gdb/configure.tgt: Add linux-record.o to s390*-linux.
	* gdb/s390-linux-tdep.c: #include "linux-record.h", "record-full.h"
	(s390_linux_record_tdep): New static global variable.
	(s390x_linux_record_tdep): New static global variable.
	(s390_all_but_pc_registers_record): New function.
	(s390_canonicalize_syscall): New function.
	(s390_linux_syscall_record): New function.
	(s390_linux_record_signal): New function.
	(s390_record_calc_disp_common): New function.
	(s390_record_calc_disp): New function.
	(s390_record_calc_disp_vsce): New function.
	(s390_record_calc_rl): New function.
	(s390_record_gpr_g): New function.
	(s390_record_gpr_h): New function.
	(s390_record_vr): New function.
	(s390_process_record): New function.
	(s390_init_linux_record_tdep): New function.
	(s390_gdbarch_init): Fill record function slots.

gdb/testsuite/ChangeLog:

	* gdb.reverse/s390-mvcle.c: New test.
	* gdb.reverse/s390-mvcle.exp: New file.
	* lib/gdb.exp: Enable reverse tests on s390*-linux.