ARI fix: "xasprintf" rule.

	ARI fix: "xasprintf" rule.
	* generic/gdbtk-bp.c (gdb_set_bp): Replace xasprintf by xstrprintf.
	(breakpoint_notify, tracepoint_notify):Ditto.
	* generic/gdbtk-cmds.c (gdbtk_load_source, gdbtk_load_asm):Ditto.
	* generic/gdbtk-hooks.c (gdbtk_ignorable_warning): Ditto.
	(gdbtk_set_hook, gdbtk_load_hash): Ditto.
	(gdbtk_selected_frame_changed, gdbtk_annotate_signal): Ditto.
	* generic/gdbtk-register.c (get_register_types):Ditto.
	* generic/gdbtk-stack.c (gdb_get_blocks): Ditto.
	(gdb_selected_block, gdb_selected_frame): Ditto.
	* generic/gdbtk.c (gdbtk_init, view_command): Ditto.