Define HAVE_MUSIC_CONTROL to false by default.
Define HAVE_MUSIC_CONTROL to false by default.

NB: Fixes an error that HAVE_MUSIC_CONTROL was never defined if you
pass --disable-music-control to configure

Signed-off-by: Chris <48d1b61d21f8504b6dc08474b224ab6407ac8581@comcast.net>

tizenorg/platform.upstream.enlightenment,rvandegrift/e,tasn/enlightenment,FlorentRevest/Enlightenment,tasn/enlightenment,tasn/enlightenment,rvandegrift/e,tizenorg/platform.upstream.enlightenment,rvandegrift/e,FlorentRevest/Enlightenment,FlorentRevest/Enlightenment,tizenorg/platform.upstream.enlightenment