Upon start-up, now directly passes all supplied paths to git in order
to check if all of them point to a valid git repository.
The clone.create() function now returns a list of Repository instances,
containing the name and location of the repository. This is later
used in the gitinspector module to execute and parse the repository.
format.output_header(...) now takes a list of Repository instances.
Thanks to this, each output format can print every supplied repository.
The supported protocols are file://, git://, http://, https:// and ssh://.
Whenever one of the above prefixes are detected in the repository name,
"git clone" is used to clone the repository into a temporary directory.
When "git clone" is called, it's output is redirected to stderr; meaning
that redirection of stdout to a file functions just as before.
If "git clone" fails for some reason, gitinspector will exit; returning
the error code from the "git clone" command.
Adam Waldenberg