submodule: document failure to handle relative superproject origin URLs
This test case documents several cases where handling of relative
superproject origin URLs doesn't produce an expected result.
submodule.{sub}.url in the superproject is incorrect in these cases:
foo
./foo
./foo/bar
The remote.origin.url of the submodule is incorrect in the above cases
and also when the superproject origin URL is like:
foo/bar
../foo
../foo/bar
Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>