Merge pull request #344 from MuMech/dev

MechJeb 2.2.1 release
Merge pull request #345 from MuMech/dev

MechJeb 2.2.1 release, now with the proper DLL version
Add an override for the Docking AP safe starting distance
Revert "Add an override for the Docking AP safe starting distance"

This reverts commit 9ad63752a60267955f19dd2f11d58be7a2e232e5.
Merge pull request #368 from BloodyRain2k/Improvements

added a setting to turn off the rcs throttle when no thrust is detected
Respect the "Use Kerbin Time" KSP setting.
Remove most reflection overhead from custom windows.
The Makefile is now OSX and Linux aware
Fixed the Linux path
Merge pull request #381 from olasundell/master

OSX-aware Makefile, now with correct Linux path and correct branch.
changed landing target altitude from 200m to 300m
changed default rover steering PID to work better with tank wheels
changed thrust controller to utilize KillHS at up to 3° error instead of only 2°