build: fix containers build for docker 1.8.
build: fix containers build for docker 1.8.

Latest docker version 1.8.x in f22 has changed the format of the
'docker version' command. Fix the script to handle new and old.

	modified:   Makepkgs

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