[maven-release-plugin] prepare release extval-2.0.8

git-svn-id: https://svn.apache.org/repos/asf/myfaces/extensions/validator/branches/branch_for_jsf_2_0@1597620 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/myfaces/extensions/validator/branches/branch_for_jsf_2_0@1597622 13f79535-47bb-0310-9956-ffa450edef68