refactored and changed semantics of trikScriptRunner to allow direct commands
script engine worker now calls brick.stop() itself, also engine restored to somewhat working state, brick.run() still can't be aborted
Merge branch 'master' into directCommands

Conflicts:
	trikRun/trikRun.pro
Some more tweaks to build system
fixed event-driven script abort crash, fixed GraphicsWidget thread problem
Fixed builder error
Fixed gyroscope and, hopefully, accelerometer
Some fixes to sensor3d
Merge pull request #48 from trikset/directCommands

Direct commands