Merge branch 'sl/autoconf'

Reduces repetition in configure.ac. * sl/autoconf: build: don't duplicate substitution of make variables build: improve GIT_CONF_SUBST signature

Junio C Hamano committed Sep 14, 2012 at 21:39 UTC ebf91ab3cba533a0338afa44cf9632f9191c2717

No changes.