Log Message:
Update musicbrainz to 2.0.2.  Also add buildlink3.mk glue.

Changes are:
Changes for libmusicbrainz 2.0.2
-------------------------------------

   - Added support for Mac OS X
   - Improved build system
   - Added build files for Visual Studio .NET (VC7)

Changes for libmusicbrainz 2.0.1
-------------------------------------
   - Added patch for pkgconfig
   - Threading handled correctly in python wrapper
   - New perl bindings
   - Had client use HTTP 1.0 rather than HTTP 1.1