* config.gcc (hppa[12]*-*-hpux11*): Set extra_parts.
	* config/pa/stublib.c (pthread_default_stacksize_np, pthread_mutex_lock,
	pthread_mutex_unlock, pthread_once): Reinstate pthread stubs.
	* config/pa/t-pa-hpux11: Add rules to build pthread stubs.
	* config/pa/t-pa64: Likewise.
	* config/pa/pa-hpux11.h (LINK_GCC_C_SEQUENCE_SPEC): Define.

From-SVN: r170287