FlowPositionEstimator added, WIP
LPF processor moved to Simple, added Delay parameter.
Prepared for Java 1.6, WIP
Merge pull request #1 from pigeonhunter/master

Java 1.6 support, for Snow Leopard users.
PID controllers cleanup
GlobalPositionProjection processor added. GPS added to PositionEstimator
AltitudeEstimator: acc Z bias estimation added
PositionEstimator: handle bad data correctly, PID: AWU added
Simple: use separate filters/delays for each field
LandDetector processor added, minor fixes
LandDetector default parameters updated
PosRatePIDControllerSimulator: SP Rate FF parameter added
Log reading error handling fixed
Log errors correction added