gdb/

gdb/
	* corelow.c (core_open): Use target_signal_from_host if CORE_GDBARCH
	is NULL.
	* fork-child.c (startup_inferior) <resume_signal>: Use enum
	target_signal type.
	* linux-nat.c (linux_nat_resume): Use target_signal_to_host before
	calling strsignal.  Use enum target_signal type for saved_signo.
	(linux_handle_extended_wait) <signo>: Use enum target_signal type.
	(linux_nat_wait_1): Use enum target_signal type for signo.  Use
	target_signal_to_host before calling strsignal.
	* remote-m32r-sdi.c (m32r_wait, m32r_detach): Replace 0 by
	TARGET_SIGNAL_0.

gdb/gdbserver/
	* target.c (mywait) <TARGET_WAITKIND_EXITED>: Fix to use INTEGER.