Merge rhel6-broken-so-reuseport-7159: RHEL6 defines SO_REUSEPORT but it doesn't work.

Author: tom.prince
Reviewer: exarkun
Fixes: #7159

twisted.internet.interfaces.IReactorMulticast.listenMultiple no longer fails
in that case.

git-svn-id: svn://svn.twistedmatrix.com/svn/Twisted/trunk@42368 bbbe8e31-12d6-0310-92fd-ac37d47ddeeb
Merge pyflakes-mail-6999 

Author: adiroiban
Reviewer: rwall, exarkun
Fixes: #6999

Fix assorted implementation issues which pyflakes points out as unnecessary or
incorrect.


git-svn-id: svn://svn.twistedmatrix.com/svn/Twisted/trunk@42376 bbbe8e31-12d6-0310-92fd-ac37d47ddeeb
Merge sslverify-no-pickle-6166-4: Deprecate pickling support in twisted.internet._sslverfiy.

Author: canibanoglu, tom.prince
Reviewer: exarkun, tom.prince, rwall
Fixes: #6166

Pickling twisted.internet.ssl.OptionSSLCertificationOptions and
twisted.internet.ssl.Keypair is no longer supported.

git-svn-id: svn://svn.twistedmatrix.com/svn/Twisted/trunk@42380 bbbe8e31-12d6-0310-92fd-ac37d47ddeeb
Merge twisted.python.usage-python3-7038-2

Author: multani, exarkun
Reviewer: adiroiban, Alex, exarkun
Fixes: #7038

Port `twisted.python.usage` to Python 3.


git-svn-id: svn://svn.twistedmatrix.com/svn/Twisted/trunk@42392 bbbe8e31-12d6-0310-92fd-ac37d47ddeeb
Merge pyflakes-for-conch-7002

Author: adiroiban
Reviewer: exarkun, cyli
Fixes: #7002

Fix most pyflakes errors in the conch module.

git-svn-id: svn://svn.twistedmatrix.com/svn/Twisted/trunk@42428 bbbe8e31-12d6-0310-92fd-ac37d47ddeeb
Merge remove-statinfo-in-ftp-4711

Author: cyli
Reviewer: adiroiban, glyph
Fixes: #4711

Removes the final usage of twisted.python.filepath.FilePath.statinfo from the Twisted codebase

git-svn-id: svn://svn.twistedmatrix.com/svn/Twisted/trunk@42473 bbbe8e31-12d6-0310-92fd-ac37d47ddeeb
Merge tls-abstraction-7098-2

Author: glyph
Reviewer: habnabit, radix, rwall, reaperhulk, hynek
Fixes: #7098

Refactor client TLS hostname verification support into a new, better
API (`optionsForClientTLS`), with new interfaces that will facilitate
addressing #4888.

git-svn-id: svn://svn.twistedmatrix.com/svn/Twisted/trunk@42511 bbbe8e31-12d6-0310-92fd-ac37d47ddeeb