CELIX-119: fixed minor memory-leaks in log_service and log_writer


git-svn-id: https://svn.apache.org/repos/asf/celix/trunk@1643876 13f79535-47bb-0310-9956-ffa450edef68
CELIX-192: added locking and cleanup

git-svn-id: https://svn.apache.org/repos/asf/celix/trunk@1643878 13f79535-47bb-0310-9956-ffa450edef68
CELIX-190: fixed memory leak fix :)


git-svn-id: https://svn.apache.org/repos/asf/celix/trunk@1643879 13f79535-47bb-0310-9956-ffa450edef68
some minor memory leak fixes

git-svn-id: https://svn.apache.org/repos/asf/celix/trunk@1643882 13f79535-47bb-0310-9956-ffa450edef68
CELIX-182: replace event_admin fw_log calls w/ loghelper

git-svn-id: https://svn.apache.org/repos/asf/celix/trunk@1644182 13f79535-47bb-0310-9956-ffa450edef68