common GpsHandler, GpsStatus, ComponentStatus, IStatusComponent.java, EP...

...D baseclass for EPDShip/EPDShore, need code review. EPD-57 related

I moved GpsHandler and in the process had to move other classes to epd-common. I'd like feedback before I merge. Specifically the structure of epd-common is now in question. Please ask me for a quick tour?

Benefit: files listed above need only be changed in epd-common now. EpdShip/EpdShore could now be simplified by refactoring methods in EPD.java.