From: Rusty Russell <rusty@rustcorp.com.au>

Currently every arch declares its own char saved_command_line[].  Make sure
every arch defines COMMAND_LINE_SIZE in asm/setup.h, and declare
saved_command_line in linux/init.h (init/main.c contains the definition).
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>