DrJava Legacy SVN Repository

More changes to Interpreter and InterpreterJVM to fix issues regarding project classpaths. Also, I've added a Scala source file to model/repl/newjvm, along with a little bash script (in the top directory which contains the build script) to compile and jar it -- this is hacky, but easier than adding a 'scalac' property to the build script (which would be worthwhile if we ended up including more Scala files in the project).