2013-05-24  Niibe Yutaka  <gniibe@fsij.org>

	* chopstx.c (chx_request_preemption): Rename from chx_preempt.

	* entry.c: "sys.h" is only for to new sys 2.0, keeping
	compatibility to 1.0, it is if-def out now.

2013-05-22  Niibe Yutaka  <gniibe@fsij.org>

	* chopstx.c (chx_enable_intr, chx_disable_intr): Implement.
	(chx_set_intr_prio): New.
	(chx_handle_intr): Use list to register interrupt threads.
	(chx_init): Set PendSV priority (as minimum: bigger).

	* entry.c (vector_table): set chx_handle_intr for all interrupts.

2013-05-21  Niibe Yutaka  <gniibe@fsij.org>

	* Initial commit.