Update vorbis / vorbisfile to use v120_xp, subsystem windows, fix include/lib paths to use environment compiled ogg, etc.
Add script to build libvorbis.
Convert libshout to vs2013.
Rename shout.h.in to shout.h.
Add compat.h from icecast-2.4.0.
Fix libshout build by applying fixes specified on Mixxx wiki.
Fix solution -- switch to v120_xp, subsystem windows, build paths, add x64 target, add opus/vorbis/webm, library dependencies and include paths.
Add script to build libshout.