winemenubuilder: Look for supported color depths icons only. [resend]

[Frank Richter]

On 30.11.2006 01:54, Vitaliy Margolen wrote:
> Remove all the code simplification. This patch fixes icon extraction for
> most steam games. All HL2 based games have .ico file with 32-bit colors.
> Since we don't support those, 

Or write the icons as PNGs.

-f.r.