Log Message:
Update idesk to 0.7.5.
Based on patch provided by ptiJo via PR 34487.

ChangeLog:

-----------
Version 0.7.5
* Major bug fixes:
        - Problem with the background changer system. This it changes the
	  background color and you still have a green background although you
	  don't have anyone Background instructions in the .ideskrc file.
	  The solution let you can use the Background.Delay option with 0 value
	  to disable the background system (without delete nothing more from
	  .ideskrc file). But if you don't have anyone Background instructions,
	  the default value will be 0 anyway. The bug is fixed.
        - Problem with startup notification support (option --enable-libsn).
	  The idesk-0.7.4 chrashes after starting xmms. This bug was reported
	  by Gentoo users. If you don't have the support for statup
	  notification the program works well.
The bug is fixed.

* Minor bug fixed:
        - When you click with mouse either for reload Idesk or run a program,
	  and you don't move the mouse of position then all icons stay with a
	  glow effect how they had obtained the focus (all in the same time),
	  they back to the normal state if you pass the mouse through the each
	  icon. This bug is solved.
        - Fixed a problem with the Idesk source (configure.in file) for avoid
	  the xlibs-dev dependencies.

Version 0.7.4
 * Features:
        - New options for Background's group. The options are:
          + Background.File: Now the option Background.File for background
	    image (wallpaper) works fine. (Default: None).
          + Background.Delay: Set the image change time in minutes format.
	    (Default: 5 min). Min 1 min, Max 1440 min. (with 0 value is disable)
          + Background.Source: Let you can define the folder where there are
	    some images. If in the folder there aren't images or the folder
	    didn't exist, then idesk looking for Background.File option.
	    (Default: None).
          + Background.Mode: Is the display mode for the images, the possible
	    values are: Stretch, Scale, Center, Fit o Mirror).
	    (Default: Stretch).
          + Background.Color: Let you set the Background color if you didn't
	    put a Background.File value or Background.Source path hadn't images.
	    If you didn't put a Background.File and Background.Color value then
	    the Background  is transparent and it get the background from the
	    original Desktop background. (Default: # A2CD70).
        - Support for Esetroot pixmap (referer to bsetroot or bsetbg programs).
	  Inside Fluxbox is very cool). It works with the new Background's
	  wallpaper support.
        - New option value 'auto' for ToolTip.CaptionPlacement let the tooltip
	  will be showed on left down side of icon.
	  (Thanks to kaneda <kaneda@bohater.net>)

 * Major changes:
        - Idesk now only can run one instance in the same DISPLAY, this let
	avoid run two or more idesk's instances in the same DISPLAY, producing
	the program works bad. But if the DISPLAY is different then idesk
	program should run fine and run another instance.
        - Some old options changed its reache. The options Background.Delay,
	  Background.File, Background.Mode, Background.Source, Background.Color,
	  ToolTip.FontSize, ToolTip.FontName, ToolTip.ForeColor,
	  ToolTip.BackColor ToolTip.CaptionOnHover, ToolTip.CaptionPlacement
	  and  Transparency only are valid inside .ideskrc file and not inside
	  the *.lnk icons files. The another options are valid in both types of
	  files.

* Minor bug fixed:
        - Fixed a error in tooltip option that produced a blink efect when the
	  tooltip is showed. The problem was in *.lnk files when the
	  Width/Height attributes were omitted.
        - Fixed bug when the options Background.File and Background.Source
	  doesnt' exist or there aren't valid PATH's for them.
        - Fixed many other minor bugs.

Version 0.7.3
 * Minor bug fixed:
        - Error in Makefile.am produce a problem with the install path.
        - Bug fixed. Problem with image produced that a section of the
          icon was removed and the icon gets filled with black lines.