t5515 in general

It looks to me like t5515 enshrines a number of infelicities in the current fetch code. For example, if you have a branch configuration which specifies a remote that's configured through a branches/* file, and you have a merge setting for the branch, it's ignored, and we test that it's ignored with a whole bunch of tests. I think that the behavior here should either be unspecified, or we should make it more generally consistant (i.e., if you specify any "merge" items, this overrides the default of using the first refspec, even if the first refspec is implicit in the fact that you're using a branches/* file, which automatically only has the configured refspec refs/heads/master:). Or leave it unspecified and untested, since neither option is actually useful.

This makes me think that a lot of t5515 was done by putting together a bunch of configurations and automatically making tests for them without checking whether the current behaviour is actually something we want, or whether the configuration even could do anything sensible in the first place. So it might be worth going through that set and eliminating anything not actually predicted by the documentation.

	-Daniel
*This .sig left intentionally blank*