[Gcrystal-main] Gnome Crystal 0.5.0 released

[Jean Bréfort]

This unstable version is the first step towards a stable Gnome-2 version.

Besides the Gnome-2 dependencies, the new features are:

* The dialog box used to define the network has been splitted in several 
boxes instead of a notebook because the sizes of the pages are very 
different.

* Printing does not use anymore a separate window (I dont know why it 
works now and did not work before).

* Gnome Crystal now needs the Gnome Chemistry Utils 
(http://www.nongnu.org/gchemutils).

Jean Bréfort