Optimize the GetSheetDimension implemention, make it read by stream, so not load the entire sheet into memory
Make initTheta() use the results of the search it performs.
Fix for setting initial pitch angle on the ground.
Updates from JSBSim, including new turbine engine model from David Culp
Removing files already removed from JSBSim CVS.
Latest JSBSim updates, including use of new "JSBSim" namespace
Fix for X-15 crash.
Sync with JSBSim CVS