app store approval, 64-bit updates

[RogerTangos]

• Remove old TestFlightLib, so that this works on 64 bit phones.
• Add concept of frequency and duration to OSMotionProbes
• OSMotionProbes turn on every kMotionSampleFrequency seconds and then stay on for kMotionSampleDuration seconds
• refactor OSMotionProbe, OSGyroProbe, OSAccelerometerProbe, OSMagnetometerProbe for dryness
• should comply with App Store 13.2:

Apps that rapidly drain the device's battery or generate excessive heat will be rejected