Removed reader/writer lock code, since it contained a deadlock. Uses...

Removed reader/writer lock code, since it contained a deadlock. Uses synchronized on whole object instead.

git-svn-id: file:///svnrepo/openebusiness/dk.gov.oiosi/library/java/trunk@18275 4e58de57-8926-0410-947e-8945c843cdd7