CELIX-107: Added Apache RAT to the build as a target. Updated several files to have a correct header, added false positives to the rat-excludes.

git-svn-id: https://svn.apache.org/repos/asf/incubator/celix/trunk@1557998 13f79535-47bb-0310-9956-ffa450edef68
CELIX-108: Updated version information to use variables defined in the top level CMakeLists.txt.

git-svn-id: https://svn.apache.org/repos/asf/incubator/celix/trunk@1557999 13f79535-47bb-0310-9956-ffa450edef68