The existing config.mak should satisfy almost everyone... You
can change the prefix and other vars catch the new setting
anyways. I had forgotten that ?= acts as = (lazy value binding)
and as not := (immediate value binding).
Signed-off-by: E. Jason Riedy <ejr@cs.berkeley.edu> Signed-off-by: Junio C Hamano <junkio@cox.net>