A patch from Leon for "No lock can be acquired after ofbiz application crashes." https://issues.apache.org/jira/browse/OFBIZ-5626

We have a service which semaphore set to "fail". Someday, while it was running, the whole ofbiz crashed. 
After the restart, the service is unable to run anymore since the lock file (database record in ServiceSemaphore entity) is already there.



git-svn-id: https://svn.apache.org/repos/asf/ofbiz/trunk@1604363 13f79535-47bb-0310-9956-ffa450edef68