DrJava Legacy SVN Repository

Changes:

- Moved splash screen and Compiz warning into DrJavaRoot. This makes
sure that the splash screen stays until the program is ready, even on
slow machines.

- Added ConcJUnit testing. To use it, set the -Duse-concjunit=true
parameter:

ant -Duse-concjunit=true test

- Added _NOJOIN to some methods that have threads that do not end and
cannot be joined as of right now. Tests pass without failures or
errors now.