[Draft] Fix raw copy when putting CMYK tiff to CMYK output

[LXY1226]

Resolves OpenPrinting/cups-filters#602

[tillkamppeter]

I am going through some left over PRs before doing a new release of libcupsfilters. Sorry for not having merged this earlier.

Unfortunately, with your patch applied libcupsfilters (2.x) does not build any more. Could you update your patch so that it works (and fixes the mentioned bug) with current libcupsfilters (GIT master)? Thanks.

[tillkamppeter]

@LXY1226 Did you test your patch on libcupsfilters 2.x?

First, the lines removed have 1 opening curly brace, and 2 closing, the lines added have 2 opening and 2 closing, and second, the constant names in the added lines have CUPS_ prefixes, as of cups-filters 1.x, but the what is needed are the new CF_ prefixes of libcupsfilters 2.x.

Can you please fix this and test with libcupsfilters 2.x and cups-filters 2.x? Thanks.