This first patch lays some groundwork needed by the others.

From: Bodo Stroesser - Change the interface to handle_signal so that it
doesn't take the system call return value as an argument and eliminate
its return value.

kern_do_signal also now doesn't return immediately after determining that
there is no signal to deliver.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>