One or more directories are not included within this
package and/or its sub-packages:

=> 1:cups-1.4-0.b1.3.fc11.i386 (rawhide-development-i386)
/usr/share/cups/ppdc

=> 1:cups-devel-1.4-0.b1.3.fc11.i386 (rawhide-development-i386)
/usr/share/cups
/usr/share/cups/ppdc

Note: It may be necessary to include %_datadir/cups in more than one
package.

[...]

Further information:

https://fedoraproject.org/wiki/Packaging/ReviewGuidelines

MUST: A package must own all directories that it creates. If it does not
create a directory that it uses, then it should require a package which
does create that directory.

https://fedoraproject.org/wiki/Packaging/Guidelines#FileAndDirectoryOwnership
https://fedoraproject.org/wiki/Packaging/UnownedDirectories