Ukopp 4.0

• Code cleanup for compiler warnings with GCC 4.6 (Ubuntu 11.10).
• Separate File Save (no dialog) and Save As (file chooser dialog).
• Added a warning for Quit with unsaved changes to backup job.
• Job name was added to window title, with (*) indicator if edited.
• Excluded files/folders no longer need to start with a top directory 
  (e.g.  exclude */folder1/fol*der2/*  works as expected).
• Toolbar has more descriptive icons for mount and unmount.
• Bugfix: one more file versions than requested was being saved.
• Bugfix: quit job edit dialog left dependent file chooser dialog open.
• Bugfix: report saved file versions: wrong value for expired bytes.