Xfdesktop 4.9.0
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* Drop AC_PROG_LIBTOOL for LT_PREREQ and LT_INIT.
* Remove docs and link to wiki.
* Thumbnail desktop icon previews using tumblerd.
* Added a check for GDK_GRAB_INVALID_TIME in
xfdesktop_popup_grab_available to mitigate slow menu popups on
a right mouse click (bug #7172).
* Add the code required to perform a paste on the on the desktop
(bug #3804).
* Display correct trash icon on menu & desktop.
* Fix for shift + drag selections/
* Icon positions are saved/restored per resolution.
* Backdrop image cycling on a timer.
* Modified xfdesktop_icon_view_drag_drop to allow all
selected files to drag and drop (bug #5025).
* Fix for moving files instead of copy when src isn't writable.
* Fix typos in the README file.
* Unmounted volumes are semi-transparent.
* Stretch background across all monitors setting (bug #5690).
* Arrange icons on the desktop menu item (bug #2833).
* Single click option to open items on desktop (bug #1797).
* Require libexo & update min requirements in readme.
* Comments in .desktop files are displayed in the tooltip (bug #8509).