Fix OleLoadPicture with Gif images

[Maxime Bellengé]

OleLoadPicture was not working for Gif because the style of the palette
was wrong in the creation of the DIB. Moreover, the gif was upside down.

I have also added support for transparent Gif.

Changelog:
    * Fix palette creation 
    * Fix upside down Gif
    * Add support for transparent Gif

-- 
Maxime Bellengé <maxime.bellenge at laposte.net>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: olepicturegif.patch
Type: text/x-patch
Size: 4494 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20040502/913c263f/olepicturegif.bin