2011-05-27 Pedro Alves <pedro@codesourcery.com>

2011-05-27  Pedro Alves  <pedro@codesourcery.com>

	gdb/
	* continuations.c (make_continuation): Make it return void.
	(do_my_continuations): Rename to ...
	(do_my_continuations_1): ... this.  Remove old_chain parameter and
	adjust.
	(do_my_continuations): New.
	(discard_my_continuations): Rename to ...
	(discard_my_continuations_1): ... this.  Remove old_chain
	parameter and adjust.
	(discard_my_continuations): New.
	(add_inferior_continuation): Simplify.
	(do_all_inferior_continuations): Reimplement on top
	do_my_continuations.
	(discard_all_inferior_continuations): Simplify.
	(add_continuation): Simplify.
	(do_all_continuations_ptid): Simplify.
	(discard_all_continuations_thread_callback): Simplify.
	(add_intermediate_continuation): Simplify.
	(discard_all_intermediate_continuations_thread_callback):
	Simplify.