remove pointer grab in authentication dialog

[Francesco Fumanti]

Binary package hint: gksu

There are users that cannot use a regular keyboard and have to rely on an onscreen keyboard to do their typing. (for example TabletPC users, disabled users that can only use a pointer,...)

These users are not able to input their password into the gksu authentication dialog, because the gksu dialog grabs the pointer.

To resolve the same issue in policykit-gnome, they decided to simply not perform any pointer grabs on its authentication dialog; see comment 12 and 13 of the following bugthread:
http://bugzilla.gnome.org/show_bug.cgi?id=531609
(remove the pointer grabs and provide a gconf key for the keyboard grabs where there seems to be more security issues)

There is a gconf key to disable grabbing for the gksu dialog. But by using an approach like that used in policykit-gnome, the gksu dialog would be accessible by the users indicated above out of the box; they would not need anymore the knowledge of the gconf key to disable grabbing from the gksy dialog.