Adds targets for building StarGenerator interface code.

[jdbrice]

Includes bare minimum targets for building essential StarGenerator code

A couple of undesirable things:

• Uses include paths from the install dir (because I could not find tables/g2t/* headers and a few other i the build dir)
• Builds 3 separate libs instead of a single "libStarGenerator.so"
• I left out StarGenerator/Kinematics which would be nice. I left it out since it depends on BOOST (it uses exactly one function, boost::split from string.hpp in a few places). If possible I'd like to write a patch that removes the BOOST dependency (replace the offending line with a stl equivalent) but I dont know how to use the patch well enough yet. But this is not a big deal, since this module doesn't add anything new, just wraps functionality for convenience.

Note: I tested this inside the starbnl/star-sw:latest-build but within that image I dont see anything in /home/ - i.e. I dont see any evidence that ccache is there. Should it be there in this image?

[jdbrice]

Just wanted to check on this... I know this is low priority, but do you have any suggestion for the first and second bullets? Maybe with some direction I can work out details.

[plexoos]

Will have a closer look today for sure... Just need some more time to review