* corelow.c, exec.c, inftarg.c, m3-nat.c, op50-rom.c, procfs.c,

	* corelow.c, exec.c, inftarg.c, m3-nat.c, op50-rom.c, procfs.c,
	remote-adapt.c, remote-e7000.c, remote-eb.c, remote-es.c,
	remote-hms.c, remote-mips.c, remote-mm.c, remote-mon.c,
	remote-nindy.c, remote-os9k.c, remote-pa.c, remote-sim.c,
	remote-st.c, remote-udi.c, remote-vx.c, remote-z8k.c, remote.c,
	w89k-rom.c, target.c, target.h:  Add support for target_stop().
	* gdbtk.c (gdb_stop):  Switch to target_stop().