Git Support ready-ness

[David Nolden]

I've noticed some more problems:
- "Git commit" should be also usable to add untracked files. However,
untracked files are only shown with git version 1.7, not with 1.6.
- When I do "Git commit" with git 1.7 and then select an untracked
file to be added, I get this error when trying to commit:

/tmp> echo error: No files or message specified -n
error: No files or message specified -n
Command exited with value 0.

Greetings, David