Manual en flash: Added promo for manual, toc,
 formatting tweaks for both screen and print.
Logger/ExternalLogger: Create "logs" directory automatically

This caused failures for users who never used XCSoars internal loggers
before trying a flight download from an external logger.
Merge branch 'v6.7.x' of git://github.com/hjr/XCSoar into v6.7.x
po: update German translation
po: update Ukrainian translation
po: update Spanish translation
po: update Ukrainian translation
po: update Ukrainian translation
Input/InputEventsTask: "next" is used as the event data to switch to next TP

Fixes trac issue #3270.
Manual avionics & airframe: Fixed wrong ref. to device config.
Util/StringUtil: Add StringStartsWithIgnoreCase function
Airspace/AirspaceParser: Relax parsing of TNP airspace files

Fixes trac issue #3272.
Merge remote-tracking branches 'hjr/v6.7.x' and 'apf/v6.7.x' into v6.7.x
InfoBoxes/InfoBoxSettings: Don't use depreciated "e_FIN_GR_TE" in default config

Fixes trac issue #3278.

Regression introduced in 674a6d54fd2000d64272e551c390bedfe4c2191b
po: update Norwegian Bokmal translation
android/ioio: update IOIOLib to 5.03

Move the UsbManager "patch" to a IOIO git repository fork.

This fixes the Android Accessory connection on Android 4.x and newer
(TRAC #2959, #3260).
TopographyFileRenderer: delete OpenGL buffer on context destroy

Fixes crash on Android when switching to another App.
Startup: log GL_EXT_multi_draw_arrays availability
OpenGL/Init: check if GL_EXT_multi_draw_arrays is available

Look up the functions only if the graphics driver announces the
extension.  The symbol may be there, but defunct.  Fixes the
topography renderer on Android.
Merge branch 'v6.7.x'