new xfrun dialog

[Olivier Fourdan]

Brian J. Tarricone wrote:
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> Hey all,
> 
> I took the liberty of rewriting xfrun4.  It seems a bit snappier.  I
> ditched xfcombo and libdbh in favor of GtkEntryCompletion and a flat
> file for the history.  Anyway, it isn't *exactly* like the old one, but
> it's close.  Let me know what you think.  If people for some reason
> think it really sucks, I can always revert it.

I've added gtk_entry_completion_set_popup_completion() as suggested by 
Pasi on IRC.

I've also fixed a couple of compiler warnings.

I hope you don't mind,
Sleep well ;)
Olivier.