gnome-utils again: Drop gdialog or zenity or merge them!

[Christian Neumair <chris gnome-de org>]

Hi there!
gdialog and zenity have a high grade of similarity:
Both are meant to create useful dialogs from the command-line. While
zenity offers a wider range of dialogs (calednar, file-selector and
question dialog, just to name some of them), gdialog has some more of
basic dialog flavors, mostly simple boxes (msgbox, textbox, radiolist
etc.).
Maybe we can merge both applications to get one which covers more usage
fields or drop one of it, while the matter to me seems to be more
target-oriented.
I'm not sure which syntax is more convinient, that should be figured out
by those who code scripts / other applications calling zenity and
gdialog.

regs,
 Chris

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