Use persimitic locking for imap jpa .. 
Use persimitic locking for imap jpa .. 

git-svn-id: 2601453adc5e6cbd1036d5a9801c88d5b249288f@939072 13f79535-47bb-0310-9956-ffa450edef68

ricardovhz/james,tools4origins/james,idtrust/james,mbaechler/james