* hppa-hpux-nat.c (child_suppress_run): Add variable to allow

	hpux-thread.c to suppress children from running.
	(hppa_hpux_child_can_run): New function.
	(_initialize_hppa_hpux_nat): Use hppa_hpux_child_can_run.
	* hpux-thread.c: Include string.h and hppa-tdep.h.
	(FLAGS_REGNUM, SP_REGNUM, PC_REGNUM): Rename to HPPA_FLAGS_REGNUM,
	HPPA_SP_REGNUM and HPPA_PCOQ_HEAD_REGNUM, respectively.
	(hpux_thread_store_registers): Replace deprecated_registers with
	calls to regcache_raw_read.
	* config/pa/hpux11.mh, config/pa/hpux11w.mh: Delete HOST_IPC.