Wine shortcuts need special parsing

[Poikilos]

Actual behavior
whichicon mixcraft yields:

* Checking for "mixcraft"...not a full path and command "None" is not in the environment's PATH either.
* [/home/redacted/.local/bin/whichicon] looking for a shortcut to "mixcraft"...
/home/redacted/.local/share/applications/wine-extension-mx6.desktop
  * skipping "/home/redacted/.local/share/applications/wine-extension-mx6hs.desktop" since already got a result!
  * skipping "/home/redacted/.local/share/applications/wine-extension-mx6hstemplate.desktop" since already got a result!
  * skipping "/home/redacted/.local/share/applications/wine-extension-mx6template.desktop" since already got a result!
  * skipping "/home/redacted/.local/share/applications/wine-extension-mx7.desktop" since already got a result!
  * skipping "/home/redacted/.local/share/applications/wine-extension-mx7hs.desktop" since already got a result!
  * skipping "/home/redacted/.local/share/applications/wine-extension-mx7hstemplate.desktop" since already got a result!
  * skipping "/home/redacted/.local/share/applications/wine-extension-mx7template.desktop" since already got a result!
  * skipping "/home/redacted/.local/share/applications/wine-extension-mx8.desktop" since already got a result!
  * skipping "/home/redacted/.local/share/applications/wine-extension-mx8hs.desktop" since already got a result!
  * skipping "/home/redacted/.local/share/applications/wine-extension-mx8hstemplate.desktop" since already got a result!
  * skipping "/home/redacted/.local/share/applications/wine-extension-mx8template.desktop" since already got a result!
  * skipping "/home/redacted/.local/share/applications/wine-extension-mx9.desktop" since already got a result!
  * skipping "/home/redacted/.local/share/applications/wine-extension-mx9template.desktop" since already got a result!

Expected behavior:

• check ~/.local before system icons
• check ~/Desktop
• strip the env command and the wine command such as in Exec=env WINEPREFIX="/home/redacted/.wine" wine C:\\\\Program\\ Files\\\\Acoustica\\ Mixcraft\\ 9\\\\mixcraft9.exe
• wine extensions should be ignored (such as /home/redacted/.local/share/applications/wine-extension-mx9.desktop which contains Exec=env WINEPREFIX="/home/redacted/.wine" wine start /ProgIDOpen Mixcraft\\ 9\\ Project.Document %f and name=Mixcraft 9)