fixes issue 463 + hashtable_add lookup is done while internal-synch lock is held
fixes issue 463
+ hashtable_add lookup is done while internal-synch lock is held

SVN-Revision: 795

AmesianX/dynamorio,code4bones/dynamorio,sigma-random/dynamorio,bl4ckic3/dynamorio,AmesianX/dynamorio,daksunt/dynamorio,AmesianX/dynamorio,daksunt/dynamorio,bl4ckic3/dynamorio,bl4ckic3/dynamorio,code4bones/dynamorio,daksunt/dynamorio,daksunt/dynamorio,sigma-random/dynamorio,daksunt/dynamorio,AmesianX/dynamorio,code4bones/dynamorio,bl4ckic3/dynamorio,code4bones/dynamorio,sigma-random/dynamorio,bl4ckic3/dynamorio,AmesianX/dynamorio,code4bones/dynamorio,sigma-random/dynamorio,sigma-random/dynamorio