re PR libgcj/13439 (gij VerifyError; works with JDK 1.4)

re PR libgcj/13439 (gij VerifyError; works with JDK 1.4)

	PR libgcj/13439:
	* verify.cc (state::merge): Copy changed locals out of subroutine
	in NO_STACK case.
	(state::FLAG_CHANGED): New const.
	(state::FLAG_UNUSED): Likewise.
	(state::local_changed): Removed.  Updated all users.
	(state::flags): New field.
	(state::merge): Added jsr_semantics argument, more logic.
	(push_jump_merge): Added jsr_semantics argument.
	(handle_jsr_insn): Set jsr_semantics on push_jump_merge when
	merging through the jsr instruction.

From-SVN: r75533