[release-tools] creating tag for tomee-1.6.0

git-svn-id: https://svn.apache.org/repos/asf/tomee/tomee/tags/tomee-1.6.0@1540902 13f79535-47bb-0310-9956-ffa450edef68
plan b 1.6.0 branch


git-svn-id: https://svn.apache.org/repos/asf/tomee/tomee/branches/tomee-1.6.0-b@1542628 13f79535-47bb-0310-9956-ffa450edef68
use alternate staged OpenJPA 2.3.0 binaries


git-svn-id: https://svn.apache.org/repos/asf/tomee/tomee/branches/tomee-1.6.0-b@1542651 13f79535-47bb-0310-9956-ffa450edef68
make the primary branch


git-svn-id: https://svn.apache.org/repos/asf/tomee/tomee/branches/tomee-1.6.0@1542656 13f79535-47bb-0310-9956-ffa450edef68