In the Third-Party Resources section, remove libsexy (since we don't use it anymore) and add libutp (which should have been added ages ago)

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@13971 f4695dd4-2c0a-0410-b89c-da849a56a58e
move kjg from the Lead section to Contributors

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@13972 f4695dd4-2c0a-0410-b89c-da849a56a58e
add Mnemosyne LLC; plus add copyediting

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@13973 f4695dd4-2c0a-0410-b89c-da849a56a58e