* sol-thread.c (GET_LWP, GET_THREAD, BUILD_LWP, BUILD_THREAD):

	* sol-thread.c (GET_LWP, GET_THREAD, BUILD_LWP, BUILD_THREAD):
	Change to rely on PIDGET etc.
	* config/i386/nm-i386sol2.h (TARGET_HAS_WATCHPOINTS,
	TARGET_CAN_USE_HARDWARE_WATCHPOINT, HAVE_CONTINUABLE_WATCHPOINT,
	STOPPED_BY_WATCHPOINT, target_[insert/remove]_watchpoint):
	define.  Allow target to use procfs hardware watchpoints.
	* config/sparc/nm-sun4sol2.h: ditto.
	* config/i386/tm-i386sol2.h (PIDGET, TIDGET, MERGEPID): modify
	definitions to use 16 bits for the pid, 15 bits for the tid, and
	1 bit for the flag.
	* config/sparc/tm-sun4sol2.h: ditto.
	(SOFTWARE_SINGLE_STEP, SOFTWARE_SINGLE_STEP_P): undefine.
	* testsuite/gdb.threads/pthreads.exp (all_threads_running): Allow
	for more than 15 thread increments.