* breakpoint.h (breakpoint_restore_shadows): New

	* breakpoint.h (breakpoint_restore_shadows): New
	declaration.
	* breakpoint.c (breakpoint_restore_shadows): New.
	(read_memory_nobpt): Delete.
	* gdbcore.h (read_memory_nobpt): Delete declaration.
	* target.c (memory_xfer_partial): Call
	breakpoint_restore_shadows.
	(restore_show_memory_breakpoints)
	(make_show_memory_beakpoints_cleanup): New.
	(show_memory_breakpoints): New.
	* target.h (make_show_memory_beakpoints_cleanup): Declare.
	* ppc-linux-tdep.c (ppc_linux_memory_remove_breakpoint):
	Make sure we see memory breakpoints when checking if
	breakpoint is still there.
	* alpha-tdep.c, alphanbsd-tdep.c, frame.c, frv-tdep.c,
	hppa-linux-tdep.c, hppa-tdep.c, i386-linux-nat.c, i386-tdep.c,
	m68klinux-tdep.c, mips-tdep.c, mn10300-tdep.c, s390-tdep.c,
	sparc-tdep.c: Use target_read_memory instead of read_memory_nobpt.