Log Message:
Update gimageview to version 0.2.23

Provided by Juan RP in PR#21851

Changes:

Version-0.2.23

	* Fixed clash bug of slideshow.
	* Plugged memory leak of JPEG loader.
	* Other minor fixes.

Version-0.2.22

	* Added automatic rotation by EXIF data.
	 (contributed from Frank Fischer <frank_fischer@gmx.de>. Thanks!)
	* Fixed detecting file name extension as case insensitive.
	 (Thanks! > Ricky Faulstich <Ricky@Faulstich.com>)
	* Fixed typo (Thanks! > Ricky Faulstich <Ricky@Faulstich.com>)

Version-0.2.21

	* Fixed compile error.

Version-0.2.20

	* Image loaders, IO streamers, Image View and Thumbnail View Embders now
	  are implemented as plugin.
	* Now GImageView can be compiled against linux-fb backend of Gtk+-2.0 by
	  "--with-gtk2=gtk+-linux-fb-2.0" configure opotion.
	* Merged Cygwin patch provided by Masahiro Sakai. Now GImageView can be
	  compiled on Cygwin.
	* Added some key binding to directory view on thumbnail window.
		CTRL + Cursor Left
		CTRL + Cursor Up: Change top directory to parent
		CTRL + Cursor Right
		CTRL + Cursor Down: Change top directory to selected
	* "Thumbnail 2" mode has been renamed to "Album" mode.
	* Added a key binding to "Album" mode.
		SHIFT + Cursor: select the fucesed image and open it.
	* Modified directory list preference to make it easy.
	* "Load thumbnails recursively in one tab" can be attached to mouse
	  button.
	* Now gimv doesn't zoom in by default when fit to frame automatically.
	* JPEG loader is added. Most of its codes are taken from libgnome-ui.
	  Creating JPEG thumbnails are much faster than GdkPixbuf.
	* Added "Slideshow (selected)" and "Slideshow (from the \ 
selected)".
	* Now you can override MPlayer options by
	  $(datadir)/gimageview/mplayerrc.
	* Enabled to play audio with visualizer
	  (Visualizer feature is supported by Xine view only).
	* Set focus to the suitable thumbnail when files are deleted.
	* Added rotation indicator in toolbar of image window.
	* Two new duplicates finders are added. One is "md5sum" and another one
	  is "File Size".
	* Clash bug of Xine view has been fixed.
	* Other minor fixes.