joysticks now work again. Note:SDL2 now uses /dev/input/event* in stead
of /dev/input/js*. /dev/input/event* is not readable by default, so
chmod +r it!!
Fix a compile error reported by masaykh (affects cygwin/mingw gcc 4.8.1).
Fix garbled practice screen audio. May introduce regressions for older ffmpeg versions that used interleaved audio (ffmpeg version requirements should be updated). Only minimal testing done.
Workaround for mingw headers not providing std::round.
Fix resource compiling - again.

Because the SDL2 merge ate my fix...
Writes to std::clog must be prefixed with "subsystem/loglevel:".
Init joysticks in Window like before.
Upgrade LibFindMacros to version 2.1.
LibFindMacros 2.2 and many updates to find modules to take advantage of it.
Merge branch 'master' into webserver