AP_Compass → AP_Common Relation

File in libraries/AP_Compass	Includes file in libraries/AP_Common
AP_Compass.h	AP_Common.h
AP_Compass_AK09916.h	AP_Common.h
AP_Compass_AK8963.h	AP_Common.h
AP_Compass_BMM150.h	AP_Common.h
AP_Compass_HMC5843.h	AP_Common.h
AP_Compass_IST8310.h	AP_Common.h
AP_Compass_LIS3MDL.h	AP_Common.h
AP_Compass_LSM303D.h	AP_Common.h
AP_Compass_LSM9DS1.h	AP_Common.h
AP_Compass_MAG3110.h	AP_Common.h
AP_Compass_MMC3416.h	AP_Common.h
AP_Compass_QMC5883L.h	AP_Common.h