Our approxidate cannot handle simple times like "5 PM yesterday", and to
fix that, we will need to add some logic for number handling. This just
splits that out into a function of its own (the same way the _real_ date
parsing works).
Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>