re PR boehm-gc/34544 (pthread_default_stacksize_np failed.)

	PR boehm-gc/34544
	* gthr-posix.h (__gthread_active_init): Delete.
	(__gthread_active_p): Do activity check here.
	Don't include errno.h on hppa-hpux.  Update comment.
	* gthr-posix95.h (__gthread_active_init): Delete.
	(__gthread_active_p): Do activity check here.
	Don't include errno.h on hppa-hpux.  Update comment.
	* config.gcc (hppa[12]*-*-hpux11*): Define extra_parts.
	* config/pa/pa64-hpux.h (LIB_SPEC): When -static is specified, only
	add -lpthread when -mt or -pthread is specified.
	* config/pa/pa-hpux11.h (LIB_SPEC): likewise.
	(LINK_GCC_C_SEQUENCE_SPEC): Define.
	* config/pa/t-pa-hpux11 (LIBGCCSTUB_OBJS): Define.
	(stublib.c, pthread_default_stacksize_np-stub.o,
	pthread_mutex_lock-stub.o, pthread_mutex_unlock-stub.o,
	$(T)libgcc_stub.a): Add methods.
	* config/pa/t-pa64 (LIBGCCSTUB_OBJS): Add pthread stubs.
	(stublib.c, pthread_default_stacksize_np-stub.o,
	pthread_mutex_lock-stub.o, pthread_mutex_unlock-stub.o): Add methods.
	* config/pa/stublib.c (pthread_default_stacksize_np, pthread_mutex_lock,
	pthread_mutex_unlock): New stubs.

From-SVN: r163461