* final.c (final_scan_insn): Hand BARRIERs off to the dwarf2 code.
	* dwarf2out.c (dwarf2out_frame_debug): Pass the whole insn along.
	(dwarf2out_stack_adjust): A BARRIER resets the args space to 0.

	* except.c (end_eh_unwinder): Subtract 1 from return address.
	* libgcc2.c (__throw): Likewise.
	(find_exception_handler): Don't change PC here.  Compare end with >.

From-SVN: r15554