fixed path separator

Use a platform-independent way to get the path separator.  This was
breaking on Windows boxes.

Also removed unused option -o.
code cleanup

Removed a completely unneccessary subclass of SafeConfigParser.
Merge pull request #58 from ayr0/makelab

fix dir separator
Introduce Vol2

Start Volume 2.
Merge pull request #59 from ayr0/vol

Introduce Vol2