[PATCH] deprecate the kernel_thread export

Announce that the kernel_thread export will be removed in half a year,
after all it's users have been converted to the kthread_ API, which I plan
to do over the next month.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>