Enable build on Linux with Mono part #3

Hi Nicolas,

Finally, we have a working version with mono 3.0.x on Linux :)

There's also a better regex for the URL check in Setup, some logging cleanup (string literal classname prefixes removed since those are provided by log4net anyway). Also I added another fix for the SQLite DateTime problem (issue #200), because More's fix was only partially correct.

Note:
Working with our DataSpace now, if using a patched version of DotCMIS. (already created a pull request for that).

-Fritz