[audioencoders] bump to their latest master

Legacy symlinks in lib/includes need fixing as with them these dont compile.
Merge pull request #5825 from uNiversaI/audio
[osx] new application icons
[skin] update re-touched skin
Merge pull request #5873 from Memphiz/osxnewicons

[osx] new application icons
[keymap] Add support for XBOX One Controller for PC

Also added missed Sabertooth in one Category
Merge pull request #5879 from mihawk90/patch-2

[keymap] Add support for XBOX One Controller for PC
fixed: use the proper make instead of calling 'make' directly

fixes builds on freebsd
cmake buildsystem
add tests needed by new u16 string stuff
wrap cmyth properly
move some more install related stuff to install script
move all install code to platform install script
allow building without doxygen
fix building with yajl2
generate scripts in a subdir to avoid problems configuring in top dir
properly wrap library.xbmc.foo
link to threading lib
remove duplicate mpeg2 entry
properly locate java and swig

also use the detected paths for java, swig and doxygen