FIX: Consistenly look for fonts in special//home, then special://xbmc
fix #3166: use URIUtils::AddFileToFolder
Settings: remove unused setting
Standardize ReplayGain case

ReplayGain is spelled with CamelCase. Strings around the settings
pannel should match that.
http://en.wikipedia.org/wiki/ReplayGain
Use round() rather than MathUtils::round_int() for time, and modulate to unsigned int. Fixes #14205
[Win32] Added support for the stack and dump file for UNC support. Changed the dumpFileName from CstdString to std::string and changed the format to c_str() otherwise we get a random file name name like /K,l for the dump file and stack trace name.
Move AEAudioFormat.h to Utils where it better fits
Allow const CAEChannelInfo be cast to std::string
Refactor AE engine selection.
Merge pull request #3278 from t-nelson/ae_fixes

AE nits
Merge pull request #3276 from jmarshallnz/time_warp

Use round() rather than MathUtils::round_int() for time, and modulate to UINT
[pydocs] addon id is optional for the Addon() class as it's retrieved automaticly. Also "id=" in front of the int isn't needed to retrieve language string.
paplayer: fix gapless playback of cue sheets
PaPlayer: Fix crossfade song change for audio cds
paplayer: explicitely disable crossfading for audio cd
[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