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

=> docbook5-schemas-5.0-1.fc11.src.rpm
=> docbook5-schemas-5.0-1.fc11.noarch (rawhide-development-i386)
/usr/share/xml/docbook5

[...]

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

The script to find unowned directories is not complete yet, but
still quite usable: http://mschwendt.fedorapeople.org/dircheck-remote.py
$ ./dircheck-remote.py -r rawhide -n docbook5-schemas