use sets for white/blacklists in auth
pass on logging in auth
don't set long reconnect interval in tests

causes failures on travis
pass on test_auth

consolidate some reusable code in base class and decorators
close zap_stream on auth.stop

addresses cleanup in tests
fix close callback timeout in zmqstream
travis is crazy slow
Merge pull request #469 from minrk/authpass

pass on zmq.auth
allow setting gc.context

enables overriding context options such as MAX_SOCKETS where needed.

closes #471
send gc errors to stderr

instead of stdout
Merge pull request #472 from minrk/gc_opts

allow setting gc.context
split zmq.auth into a subpackage

avoids unnecessary imports of ioloop when unused
update test_auth with changes
update zmq.auth examples
Merge pull request #476 from minrk/split-auth

split zmq.auth into a subpackage
first stab at bundling libsodium
update MANIFEST.in for libsodium
don't install libzmq, lib sodium when zmq should be bundled
Fixes tornado < 3.0 ioloop "instance" test failure
don't bundle libsodium on Windows