NEWS: prepare for 6.7.1
NEWS.txt: remove remains of unreleased version 6.6.6

Development of 6.6.6 was cancelled due to the 6.7 release.
build: Fixed duplicate imagemagick call

This created issues in builds with high -j settings on some machines and
the convert-to-bmp-half function is expecting _1.bmp extensions which
created wrong output when fed with _2.bmp.
po: update Swedish translation
po: add Lithuanian translation
LanguageGlue: add support for Lithuanian
Kobo/WifiDialog: Clear passphrase before calling TextEntryDialog()

Fixes trac issue #3053.
Merge branch 'v6.7.x' of git://git.xcsoar.org/xcsoar/apf/xcsoar into v6.7.x
Replay/IGCReplay: clear IGCExtensions in IGCReplay constructor

Fixes trac issue #3107.
po: update Swedish translation
dlgCredits: fix crash on Android 4

Due to Android 4 relocating the "_size" symbols, we had a buffer
overflow and a ridiculous allocation, leading to std::bad_alloc and
terminate().  Fixes TRAC #3106.
Android/Texture: always initialise the allocated size

Previously, textures that were created by Java code did not know the
allocated size, and the two GLTexture attributes were undefined.  That
did not matter because the OES_draw_texture code doesn't use it, but
we may want to disable OES_draw_texture sometimes.
OpenGL/Texture: make OES_draw_texture a runtime choice

Check whether the extension is supported, and fall back to regular
triangle strip rendering.
OpenGL/Texture: don't use OES_draw_texture on buggy GPUs

Blacklist Vivante GC800/GC1000 due to a texture rendering bug: when
combined with GL_COLOR_LOGIC_OP, the left quarter of the texture is
not drawn (TRAC #1995, #2228, #2990, #2998, #3105).
VERSION.txt, NEWS.txt: prepare version 6.8
LargeTextWidget: add hot keys for scrolling

Copy code from dlgCredits.cpp.
Form/Draw: convert constructor to method Create()

Allow creating a WndOwnerDrawFrame instance without actually creating
the window.
SimulatorPromptWindow: include cleanup
CreateWindowWidget: new utility Widget class
dlgCredits: don't use XML layout

Move the dialog layout code to the new class ArrowPagerWidget.