Landing files for icon urls. For windows only currently, this code will read out
icon bitmaps based on info from the windows registry and turns that into a 24 bit RGB image
which we can render. Icon urls have the form of:
icon://test.html/large
icon://test.doc/small
icon://test.doc (defaults to small).
Currently doesn't work on win2k yet.
git-svn-id: svn://10.0.0.236/trunk@91024 18797224-902f-48f8-a5cc-f745e15eee43
