Port fix to build the pmns during pcp setup from pcp.spec.in to fedora.spec.
Port fix to build the pmns during pcp setup from pcp.spec.in to fedora.spec.

This ports lberk's fix (6fede86a8) for BZ 185749 in pcp.spec.in to
fedora.spec, including kenj's follow-up fix to rm -f .NeedRebuild

edwardt/pcp,wuliming/pcp,wuliming/pcp,aeg-aeg/pcpfans,prasincs/pcp,wuliming/pcp,edwardt/pcp,aeg-aeg/pcpfans,tjanez/pcp,wuliming/pcp,edwardt/pcp,adfernandes/pcp,adfernandes/pcp,aeg-aeg/pcpfans,wuliming/pcp,wuliming/pcp,aeg-aeg/pcpfans,tjanez/pcp,adfernandes/pcp,wuliming/pcp,prasincs/pcp,prasincs/pcp,edwardt/pcp,aeg-aeg/pcpfans,tjanez/pcp,prasincs/pcp,prasincs/pcp,aeg-aeg/pcpfans,adfernandes/pcp,tjanez/pcp,tjanez/pcp,prasincs/pcp,tjanez/pcp,aeg-aeg/pcpfans,aeg-aeg/pcpfans,prasincs/pcp,adfernandes/pcp,tjanez/pcp,edwardt/pcp,tjanez/pcp,edwardt/pcp,wuliming/pcp,prasincs/pcp,edwardt/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,edwardt/pcp