* blockframe.c (find_pc_partial_function): Inhibit mst_trampoline

	* blockframe.c (find_pc_partial_function): Inhibit mst_trampoline
	symbol special handling when INHIBIT_SUNSOLIB_TRANSFER_TABLE_HACK
	is defined.
	* infrun.c (IN_SOLIB_CALL_TRAMPOLINE): Renamed from
	IN_SOLIB_TRAMPOLINE.  All callers changed.
	(IN_SOLIB_RETURN_TRAMPOLINE): Provide default definition.
	(wait_for_inferior): Handle single stepping through trampolines on
	return paths from shared libraries.
	* config/pa/tm-hppa.h (IN_SOLIB_CALL_TRAMPOLINE): Use
	in_solib_call_trampoline.
	(IN_SOLIB_RETURN_TRAMPOLINE): Use in_solib_return_trampoline.
	(INHIBIT_SUNSOLIB_TRANSFER_TABLE_HACK): Define.
	* hppa-tdep.c (in_solib_call_trampoline): New function.
	(in_solib_return_trampoline): New function.