gnu: Add libkate. * gnu/packages/oggvorbis.scm (libkate): New variable. * gnu/packages/oggvorbis.scm (vorbis-tools): Add input libkate.
gnu: Add flac. * gnu/packages/oggvorbis.scm (flac): New variable. * gnu/packages/oggvorbis.scm (vorbis-tools): Add flac input. * gnu/packages/patches/flac-fix-memcmp-not-declared.patch: New file.
gnu: vorbis-tools: Enable ogg123. * gnu/packages/oggvorbis.scm (vorbis-tools): Add inputs ao and curl.
gnu: Add libao. * gnu/packages/oggvorbis.scm (ao): New variable.
gnu: Add GNU Speex. * gnu/packages/oggvorbis.scm (speex): Add it. (vorbis-tools): Add 'speex' to 'inputs'.
gnu: Add libogg, libvorbis and vorbis-tools. * gnu/packages/oggvorbis.scm: New file. * Makefile.am (MODULES): Add it.