Merge pull request #20 from jjlin/contrib

Make the project build from a fresh clone
Mission Planner 1.2.37
px4 detect - wont work until usb hang is fixed
new board selcetion in firmware screen
add 2d fix to hud
new servo options
new px4 driver
px4 uploading
new quad x8 firmware placeholder.
fix firmware history error
add ioboard firmware dl
fix preflight calib from action tab
fix grid alt scaling ft/m
fix quad aerosim hil
update rover modes
fix log downloading
remove gzip updateing
add miliseconds to mavlink csv's
External Librarys
pfx's
px4uploader
Mission Planner 1.2.38
fix updater
Mission Planner 1.2.39
px4 detection mod
.net 3.5 > 4.0
add new frame type
add osd config button
firmware back to autodetect
fix xplane hil accel and gyro scaling
eto testing
Mission Planner 1.2.40
fix mono start
fix trap frame definition
Mission Planner 1.2.41
fix swarming grid
add mavlink tcp passthough
Mission Planner 1.2.42
swarm mods
AR2 pid update
SITL sim mods
Mission Planner 1.2.43
fix advanced param issue.
mod px4 driver
allow multiple simulator instances
gather param types
Mission Planner 1.2.44
disable dtr on connect
px4 uploader mods
px4 upload progress
Mission Planner 1.2.45
px4 inf mod
firmware screen mod
beta fw now from firmware.diydrones.com
add l1 to arduplane config
swarm - setup relative to master based on gps coords
dataflashlog update
restore dtr on connect
add control-s to many config forms
DataFlash: updated flash messages for plane and rover
Merge pull request #30 from tridge/master

update rover and plane flashlog XML
Mission Planner 1.2.46
add binary log support
add new self describing log format
disable dtr when using px4
fix failsafe screen
fix AC accel calib
mag calib is no 60 seconds from 30
firmware > add latest fw
remember last lat,lng,alt for main map.
fix swarm initial location
Mission Planner 1.2.47
add RPY to nmea output as $GPRPY
update current state for all mavs connected
update wix gerneration for rsync uploads and google code
swarm fixs, new status box's
add droneshare tlog upload support
use new firmware APMVERSION: tags
xplane hil, go back to xplane accel data
add aerosim sitl support
speedup friendly config a little
Mission Planner 1.2.48
modify accel calib
mono ssl fix
add ch6_ dec
better amazon error handling
add AC_Fence
add 3dr radio check on tracker scan
Use right fields for georeferencing pictures.

Uses the GPS alt as the georeference altitude.
Disable SignAssembly in a couple of files so it's easier to compile.