Replaced licenses.
Replaced #if-#elif logic in default Framework.Media classes.
First run at reorganizing Song.cs and MediaPlayer.cs on a per-API basis.
Merge branch 'develop' into MediaPlayerSplit
Removed iOS code from Song.cs
Removed duplicate methods contained in the Linux path.
Removed duplicate destructor.
Merge branch 'develop' into MediaPlayerSplit
Linux fix.
Merge pull request #2301 from SickheadGames/MediaPlayerSplit

Split MediaPlayer/Song on a per-API basis