development files for gnustep-dl2 runtime libraries

 Beside the headers and so symlinks for EOAccess, EOInterface and
 EOControl libraries, the package includes the general gdl2.make
 .
 GNUstep Database Library Version 2 is needed by GNUstep applications that
 communicate with databases. It's an implementation of Apple's
 Enterprise Objects Framework (EOF) v 3.0 (from NeXT), and Apple's
 WebObjects 4.5 interface.