This patch is from Nigel's swsusp2, it kills ugly #include <suspend.h> from
all over the tree, and makes code slightly nicer.  I only left those parts
that do not change any code.

From: Nigel Cunningham <ncunningham@linuxmail.org>
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>