Support Betaflight's gyro_scale field

Fix display of logs with powerup times in excess of 35 minutes

Update static libraries for Mac OS X

Add support for new gyro field name in 1.9.0

Add decoding for failsafePhase field

Minor code tidyup

Add Windows XP support for win32 binaries

Fix thread handle leak on win32

Statically link VS2013 std library so redistributable no longer required

Fix the usage information's stated defaults for accel and rotation