1.0.2dev: make sure git tests pass even without author info (#11045)
1.0.2dev: make sure git tests pass even without author info (#11045)

Set the user.name and user.email in the config of the test repo,
and while at it, use a unicode name and test it's correctly read back.

Also, show stderr output in case of failure of a git command,
to ease debugging.



git-svn-id: 3bd1c7f5b9365705bff4dd56977498491f5ac132@11675 af82e41b-90c4-0310-8c96-b1721e28e2e2

exocad/exotrac,exocad/exotrac,exocad/exotrac,exocad/exotrac