[mission] add mission messages
[mission] add mission module (only parsing messages for now)
[mission] define mission structures
[mission] forgot some files
[flight_plan] add 'until' attribute to 'survey' and 'call' statement
[flight_plan] update DTD for until attribute with call and survey
[mission] update mission interface
[mission] add missing files
[mission] better mission interface

- cleaning interface
- better parsing
- better handling of navigation routine
- implement several insertion modes
- implement duration
- conversions from LLA to local are missing in parsing function
- some patterns are missing
- only fixedwing so far
Merge remote-tracking branch 'paparazzi/master' into mission
[mission] fix segmentation fault and add generic mission FP
Merge pull request #548 from enacuavlab/mission

Mission