This patch allows someone to use configure to build git while at the
same time disabling the python remote helper code. It leverages the
ability of GIT_ARG_SET_PATH to accept an optional second argument
indicating that --without-$PROGRAM is acceptable.
Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca> Signed-off-by: Junio C Hamano <gitster@pobox.com>