Replace apache-commons-codec with apache-commons-codec-eap6

the apache-commons-codec conflicts with jakarta-commons-codec,
which is an older version of itself.  The eap6 build is installed
into a separate directory, so conflicts shoudln't be a problem.

Conflicts:
	candlepin.spec
	deps/el6.txt
	deps/el7.txt
Update for older candlepin build process.
Automatic commit of package [candlepin] release [0.9.6.4-1].