Allow whitespace in pointer-to-function
	[accept "(* done)", not just "(*done)"].

Allow tabs (spaces are already allowed) between "#define" and a macro name.
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>