libxfce4mcs-dev 4.3.0svn+r19775-0ubuntu3 (i386 binary) in ubuntu dapper

 This package contains the development files libxfce4mcs-client
 and libxfce4mcs-manager which are the main parts of the Xfce4
 configuration system. If you want to develop applications that
 use one of these two libraries, you want to install this package.
 .
 Homepage: http://www.xfce.org/