config root man

- cut off names in the listbox that are to long
done 27Jan95
	The current behaviour may not be desirable. When browsing through
	long names these, when highlighted, will be shown with the first
	characters cut off, when not highlighted the last characters will
	be cut off.

- look at behaviour of TAB key when browsing through directories.
done 28Jan95

- make sure the full name of the directory is written to the 
  "Directory:"-box
done 28Jan95

- mark current selections in listbox when initializing the listobject
Idontknow
- test and use Notify() when checking for error conditions
ok
- test overall
- adapt color of buttons when changing focus to the button.
done 28Jan95
- add shade to dialog_fselect()-window
done 29Jan95
- add (nn%) indication to lists.
done 30Jan95
- add use_helpfile()
done 13Feb95
- add use_helpline()

NOTE: apparently there is a bug (or a strange interaction between pkg_manage
and dialog_textbox) in dialog_textbox. When I use this routine to display 
the helpfile in display_helpfile() the program gets mysterious segmentation
faults and bus errors.
I now use dialog_mesgbox, after I have read the file into a buffer.