XMLBEANS-502: Allow to manually clear ThreadLocals via a new ThreadLocalUtil.clearAllThreadLocals()
 
This allows to avoid memory leaks or log warnings in applications that 
make heavy use of thread-pools or web-containers, e.g. Tomcat

git-svn-id: https://svn.apache.org/repos/asf/xmlbeans/trunk@1855161 13f79535-47bb-0310-9956-ffa450edef68
13 files changed