(libT) #4632 'custom blocklist generates 2x # of rules': add unit test (currently failing) to test for this issue.

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@13825 f4695dd4-2c0a-0410-b89c-da849a56a58e
(libT) #4632 'custom blocklist generates 2x # of rules': add a fix, which causes r13825's test to pass

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@13826 f4695dd4-2c0a-0410-b89c-da849a56a58e
(qt) #5239 'client should have the option to play a sound when the download completes' -- use QApplication::beep() on OS X and Mac. Patch by rb07

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@13827 f4695dd4-2c0a-0410-b89c-da849a56a58e