[PATCH v2 0/3] contrib/subtree: Store subtree sources in .gitsubtree

Thanks to Jonathan for the constructive criticism of the tests.  Here
is the latest version.

I suspect I'll need to leave it until after David's changes to the
tests are merged into master, unless anyone thinks I should rebase
elsewhere. I think my tests only need a minor update to accommodate
those changes.

-- 
Paul [W] Campbell