- minor uint16_t casting, save some space before < or > operand
- RCSERIAL is now deeply integrated. If a MSP_SET_RAW_RC comes, it will just override legacy RX data.

git-svn-id: http://multiwii.googlecode.com/svn/trunk/MultiWii_shared@1420 02679b44-d973-9852-f2fa-63770883b36c