* gdesktop.c (icon_event): Rewrote event handling for icons on the
desktop. This function handles button presses and releases and
does some anal-retentive checking to avoid stuck pointer grabs.
(icon_event_after): New fallback function for button presses.
This is only called when an icon is being edited and the user
clicks outside the icon's text item, indicating that editing
should be accepted and terminated.
(selection_stopped): New callback used to re-install the mouse
grab once the icon text item stops selecting text.
* gdesktop.h (DesktopIconInfo): Removed the finishing_selection
flag now that the event handling code is cleaned up.
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