sysdm patch for using a masked ReactOS Logo, lights up a drawing bug

This patch makes sysdm using a masked bitmap for the ReactOS Logo, so we don't have this grey rectangle around it if we changed the dialog background color.

To patch your sysdm code, apply the patch file in the ZIP archive and replace the "rosbitmap.bmp" with the one from the archive.

Unfortunately, there are still two open problems with this patch:

1) It uses the system palette for the SRCPAINT BitBlt instead of the Bitmap Palette (used with SRCCOPY). Therefore the colors of the Logo are slightly wrong.
I have no idea how to use the correct palette, so maybe someone else can fix this.

2) Under ReactOS, the image is completely messed up. It works well under Windows XP. (see attached screenshots)