Call entry point Scaled.

This makes the jps output less cryptic.
Note to self.
Missed some Main -> Scaled spots.
Fixed side-effect free statement.

That one seems like it should have triggered a compiler warning.
Basic javac and scalac opts support.

Right now they're specified in package.scaled and inherited by all modules.
Eventually I'll allow them to be specified in module.scaled as well and merge
them with the values from package.scaled.
Provide some jc and scopts.
Fix some posfix ops uses.
Main -> Pacman.

Same reason.