fixing buzzer related compilation errors on OLIMEXINO target [by Dominic Clifton]
moved alignSensors from drv_system to utils
updating uvproj to keil5

git-svn-id: https://afrodevices.googlecode.com/svn/trunk/baseflight@431 7c89a4a9-59b9-e629-4cfe-3a2d53b20e61