2002-10-26  Daniel Elstner  <daniel.elstner@gmx.net>

* pixmaps/stock_menu_about.png: New image stolen from Gnome2.
* pixmaps/Makefile.am src/main.cc: Register the new stock image.

* src/prefdialog.{cc,h}: New files, implemening the preferences dialog.  The about box is integrated as second notebook page, because I couldn't think of a better place to put it.

* src/mainwindow.{cc,h}: Make the preferences tool button work.