[maven-release-plugin] prepare release CONFIGURATION_1_10RC1

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/branches/RELEASE_1_10_BRANCH@1534568 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/branches/RELEASE_1_10_BRANCH@1534570 13f79535-47bb-0310-9956-ffa450edef68