fixed #255 changed the way the debugger is launched. Now the classpath is set as en env var instead of the -cp arg.

A similar issue was discovered for system properties -Dprob.home= with path with space. This is solved through a new overture.properties file which respects special entries system.prob.home (the system. prefix) these are copied in Properties.init to System.setProperty (while stripped for system.)

The probsolverintegration descriptor was updated to match the maven groupe update done from overture to overturetool.

A new develop launch tab check box is added to enable the VM to print its internal settings easing debug.

Trace execution has also been updated to include prob and the new env cp way of launching.