- Added general servo handler
- MSP_SET_MISC changed to follow MSP_MISC
- replaced MIDRC in MSP_MISC by failsafe_throttle (for both read/write)

git-svn-id: http://multiwii.googlecode.com/svn/trunk/MultiWii_shared@1421 02679b44-d973-9852-f2fa-63770883b36c