Honor GIT_SSH when opening SSH connections If the environment variable GIT_SSH is set, use GIT_SSH for any remote protocol connections, instead of the local JSch library. Bug: 321062 Change-Id: Ia18ea49d58f3ed657430067f1f72ef788a2dae4c Signed-off-by: Shawn O. Pearce <spearce@spearce.org>