Core library for the Unity interface.

 Unity is a desktop experience that sings. Designed by Canonical and the Ayatana
 community, Unity is all about the combination of familiarity and the future. We
 bring together visual design, analysis of user experience testing, modern
 graphics technologies and a deep understanding of the free software landscape
 to produce what we hope will be the lightest, most elegant and most delightful
 way to use your PC.
 .
 This package contains shared libraries to be used by unity-3d and unity-2d.