libxinerama1 2:1.0.1-4build1 (amd64 binary) in ubuntu gutsy

 libXinerama provides an X Window System client interface to the XINERAMA
 extension to the X protocol.
 .
 The Xinerama (also known as panoramiX) extension allows for multiple screens
 attached to a single display to be treated as belonging together, and to give
 desktop applications a better idea of the monitor layout.
 .
 More information about X.Org can be found at:
 <URL:http://xorg.freedesktop.org>
 <URL:http://lists.freedesktop.org/mailman/listinfo/xorg>
 .
 This module can be found as the module 'lib/Xinerama' at
 :pserver:anoncvs@cvs.freedesktop.org:/cvs/xorg