Started work on a git repo import script

Problem now is with submodules there's no real guarantee that submodule
will exist tomorrow. The author could delete it and suddenly the
submodule won't work. I've got around this by forking the project but
then I have to maintain keeping a fork up to date. All this script does
is pull down the latest from author's site, creates a GIT_VERSION file
and then deletes the git references.