rename command should take care of .gitignore file

[herrsimon]

I just noticed that 'vcsh rename oldname newname' neither renames the gitignore file in ~/.gitignore.d, nor updates the core.excludesfile directive in the renamed repositories' config.

As far as I understand, this leads to some unexpected behavior when writing a new gitignore after renaming or adding another repository named 'oldname' after issuing the above command, right?

[alerque]

Anybody interested in this issue should definitely review the comments in #163, which was a duplicate of this issue with more detailed analysis.