Seems that httpd-itk appeared on Fedora EPEL repository, but is built against httpd 2.2.22, which is not into CentOS 6 updates as time of writing.
Maybe when CentOS6 will be again in sync with el6, will be better to use a Fedora provided rpm instead of mine 
Update 05/08/2012: mmh I’ve checked RH rpms and they still have http 2.2.15. Wondering why Epel offers httpd-itk based on different apache version… anyone tryed it to check if is working ok ?