paplayer: fix flac 7 and 8 channels
ActiveAE: fix hang if stream provided data which was no multiple of framesize
ActiveAE: fix remap for channels greater 8
set focus to the first non-disabled control
disable spin controls with only one entry
[depends] add (non-native) sdl to linux
[depends] steal X11 and friends from system libs on linux
they are needed, but not in unified deps
[depends] fix ffmpeg cross compilation on linux
[buildsteps] fix linux64 build
[buildsteps] if multithreaded building fails on linux, rerun make singlethreaded once more
[buildsteps] there is no package on linux64 build