OP-1263 SDL is now downloaded and installed independently and is not added to Qt anymore
OP-1263 cleaned up gcscontrol.pro
OP-1263 moved SDLGamepad members to new private class SDLGamepadPrivate so as to not expose SDL.h to users of this lib
OP-1255 Qt 5.2.1 : use _MAX_PATH from stdlib.h in place of MAX_PATH from usbstorioctl.h
OP-1255 Windows toolchain : upgraded Qt from version 5.1.1 to version 5.2.1
- Qt installer is now downloaded from official web site
- Qt is not anymore tweaked to contain the SDL SDK (see OP-1263)
- Installing Qt now requires 7-Zip to be available (run "./make/scripts/win_sdk_install.sh [<OpenPilot tools dir>]" to get it)
- SLD needs to be installed with "make sdl_sdk_install"
KNOWN ISSUE : GCS build fails unless V=1 command line arg is provided