(libT) fix dangling pointer in tor->currentDir when reloading a .resume file from disk

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@13912 f4695dd4-2c0a-0410-b89c-da849a56a58e
(libT) change the API signature for tr_torrentVerify() s.t. client code can be notified when the verify is finished

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@13913 f4695dd4-2c0a-0410-b89c-da849a56a58e