Log Message:
Update to 2.8.0; fixes build with current boost.
Build system changed to cmake.

Rename patch-ab; the other pre-existing patches do not appear to be
needed any further.

No recent upstream news or changelog appears to exist. The project
home page doesn't admit the existence of versions newer than 2.0.0,
but there are several, corresponding to the recent versions of
FlightGear.