[scala-language] ScalaLab in Scala console mode

Hi,

from now on ScalaLab can run and as
the standard Scala Console,
extended with all the scientific libraries.

This will now require a separate installation of Scala.
To enable this mode, simply add "scala" at the end of command list,
i.e.:

java -Xss20m -Xms200m -Xmx1000m -jar scalalab.jar scala

Regards

Stergios