Mavenization of Cacio

[Roman Kennke]

Hi folks,

I started to make Maven projects for Cacio. So far the shared libs and
CacioWeb are Mavenized. This should make it much easier to deal with
dependencies and packaging. In order to build a project do a 'mvn clean
install' at the project root.

Regarding CacioWeb, I implemented some automagic library loading.
The .so is now embedded in the cacioweb jar and automatically loaded as
a native library.

Should there be need, we can adjust the paths in the Ant build scripts
to keep building with ant as well.

Best regards, Roman