[maven-release-plugin] prepare release FILEUPLOAD_1_3_RC1

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/fileupload/trunk@1454370 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/fileupload/trunk@1454373 13f79535-47bb-0310-9956-ffa450edef68