some basic things work, much still has to be done
- made as few changes as possible to make it compile under D2
- removed system.thread, use standard threads
- lots of other changes
git-svn-id: https://sfml.svn.sourceforge.net/svnroot/sfml/branches/sfml2@1333 4e206d99-4929-0410-ac5d-dfc041789085
