CELIX-188: Added missing header files to installation.

git-svn-id: https://svn.apache.org/repos/asf/celix/trunk@1641135 13f79535-47bb-0310-9956-ffa450edef68
CELIX-182: Updated used enum types to correct log_service types.

git-svn-id: https://svn.apache.org/repos/asf/celix/trunk@1641136 13f79535-47bb-0310-9956-ffa450edef68