- assign id for MSP_PRIVATE message with no code for the moment
- range [50-99] won't be used in multiwii and can therefore be used for any custom fork implementation without the risk of conflict id later

git-svn-id: http://multiwii.googlecode.com/svn/trunk/MultiWii_shared@1661 02679b44-d973-9852-f2fa-63770883b36c
- add MSP_ACC_TRIM and MSP_SET_ACC_TRIM (http://www.multiwii.com/forum/viewtopic.php?f=8&t=4574)

git-svn-id: http://multiwii.googlecode.com/svn/trunk/MultiWii_shared@1662 02679b44-d973-9852-f2fa-63770883b36c
- little change for GPS_PROMINI detection

git-svn-id: http://multiwii.googlecode.com/svn/trunk/MultiWii_shared@1663 02679b44-d973-9852-f2fa-63770883b36c
Merge branch 'upstream_shared'
- SBUS patch (http://www.multiwii.com/forum/viewtopic.php?f=8&t=4425&start=40#p47156)

git-svn-id: http://multiwii.googlecode.com/svn/trunk/MultiWii_shared@1664 02679b44-d973-9852-f2fa-63770883b36c
- dissociate frame parsing and frame computation for SERIAL GSP to smooth cycle loop jitter

git-svn-id: http://multiwii.googlecode.com/svn/trunk/MultiWii_shared@1665 02679b44-d973-9852-f2fa-63770883b36c
- consider I2C_GPS as a simple GPS device like SERIAL GPS: the same code is now used for all GPS devices. (best option to keep old I2C GPS compatibility, but code size with GPS is now an issue with pro micro proc)
- make HEADFREE optional
- use struct to serialize GPS data in MSP part

git-svn-id: http://multiwii.googlecode.com/svn/trunk/MultiWii_shared@1666 02679b44-d973-9852-f2fa-63770883b36c
Enabled HMC5883

Needed to adjust accelerometer and gyro orientation because I need to turn the MPU-6050 around
Connected VBAT and STABLEPIN

Had to override the default values for STABLEPIN
Merge branch 'upstream_shared'