First commit with code imported from the Sigme project.

The Sigme project (https://github.com/feees/Sigme) contained utilities
for general Java, Java EE Web Profile and Java EE Full Profile projects.
Since these utilities might be useful for projects in Nemo, they were
transformed into their own modules. The idea is to make Maven
dependencies out of them once I have a Maven2 repository set up
somewhere.