Update py-twisted* to 15.5.0.

Twisted Core 15.5.0 (2015-11-28)
================================

This is the last Twisted release where Python 2.6 is supported, on any
platform. Python 3.5 (on POSIX) support has been added.

This release introduces changes that are required for Conch's SSH
implementation to work with OpenSSH 6.9+ servers.

Features
--------
 - twisted.python.url is a new abstraction for URLs, supporting RFC
   3987 IRIs. (#5388)
 - twisted.python.logfile is now ported to Python 3. (#6749)
 - twisted.python.zippath has been ported to Python 3. (#6917)
 - twisted.internet.ssl.CertificateOptions and
   twisted.internet.ssl.optionsForClientTLS now take a
   acceptableProtocols parameter that enables negotiation of the next
   protocol to speak after the TLS handshake has completed. This field
   advertises protocols over both NPN and ALPN. Also added new
   INegotiated interface for TLS interfaces that support protocol
   negotiation. This interface adds a negotiatedProtocol property that
   reports what protocol, if any, was negotiated in the TLS handshake.
   (#7860)
 - twisted.python.urlpath.URLPath now operates correctly on Python 3,
   using bytes instead of strings, and introduces the fromBytes
   constructor to assist with creating them cross-version. (#7994)
 - twisted.application.strports is now ported to Python 3. (#8011)
 - twistd (the Twisted Daemon) is now ported to Python 3. (#8012)
 - Python 3.5 is now supported on POSIX platforms. (#8042)
 - twisted.internet.serialport is now ported on Python 3. (#8099)

Bugfixes
--------
 - twisted.logger.formatEvent now can format an event if it was
   flattened (twisted.logger.eventAsJSON does this) and has text after
   the last replacement field. (#8003)
 - twisted.cred.checkers.FilePasswordDB now logs an error if the
   credentials db file does not exist, no longer raises an unhandled
   error. (#8028)
 - twisted.python.threadpool.ThreadPool now properly starts enough
   threads to do any work scheduled before ThreadPool.start() is
   called, such as when work is scheduled in the reactor via
   reactor.callInThread() before reactor.run(). (#8090)

Improved Documentation
----------------------
 - Twisted Development test standard documentation now contain
   information about avoiding test data files. (#6535)
 - The documentation for twisted.internet.defer.DeferredSemaphore now
   describes the actual usage for limit and tokens instance
   attributes. (#8024)

Deprecations and Removals
-------------------------
 - twisted.python._initgroups, a C extension, has been removed and
   stdlib support is now always used instead. (#5861)
 - Python 2.6 is no longer supported. (#8017)
 - twisted.python.util.OrderedDict is now deprecated, and uses of it
   in Twisted are replaced with collections.OrderedDict. (#8051)
 - twisted.persisted.sob.load, twisted.persisted.sob.loadValueFromFile
   and twisted.persisted.sob.Persistent.save() are now deprecated when
   used with a passphrase. The encyption used by these methods are
   weak. (#8081)
 - twisted.internet.interfaces.IStreamClientEndpointStringParser has
   been removed and Twisted will no longer use parsers implementing
   this interface. (#8094)

Other
-----
 - #5976, #6628, #6894, #6980, #7228, #7693, #7731, #7997, #8046,
   #8054, #8056, #8060, #8063, #8064, #8068, #8072, #8091, #8095,
   #8096, #8098, #8106

Twisted Conch 15.5.0 (2015-11-18)
=================================

Features
--------
 - twisted.conch.ssh now supports the diffie-hellman-group-exchange-
   sha256 key exchange algorithm. (#7672)
 - twisted.conch.ssh now supports the diffie-hellman-group14-sha1 key
   exchange algorithm. (#7717)
 - twisted.conch.ssh.transport.SSHClientTransport now supports Diffie-
   Hellman key exchange using MSG_KEX_DH_GEX_REQUEST as described in
   RFC 4419. (#8100)
 - twisted.conch.ssh now supports the hmac-sha2-256 and hmac-sha2-512
   MAC algorithms. (#8108)

Deprecations and Removals
-------------------------
 - twisted.conch.ssh.keys.objectType is now deprecated. Use
   twisted.conch.ssh.keys.Key.sshType. (#8080)
 - twisted.conch.ssh.transport.SSHClientTransport no longer supports
   Diffie-Hellman key exchange using MSG_KEX_DH_GEX_REQUEST_OLD for
   pre RFC 4419 servers. (#8100)

Twisted Web 15.5.0 (2015-11-18)
================================

Features
--------
 - twisted.web.http.Request.addCookie now supports the httpOnly
   attribute which when set on cookies prevents the browser exposing
   it through channels other than HTTP and HTTPS requests (i.e. they
   will not be accessible through JavaScript). (#5911)
 - twisted.web.client.downloadPage is now ported to Python 3. (#6197)
 - twisted.web.client.Agent is now ported to Python 3. (#7407)
 - twisted.web.tap (ran when calling `twistd web`) has now been ported
   to Python 3. Not all features are enabled -- CGI, WSGI, and
   distributed web serving will be enabled in their respective tickets
   as they are ported. (#8008)

Bugfixes
--------
 - twisted.web.client.URI now supports IPv6 addresses. Previously this
   would mistake the colons used as IPv6 address group separators as
   the start of a port specification. (#7650)
 - twisted.web.util's failure template has been moved inline to work
   around Python 3 distribution issues. (#8047)
 - twisted.web.http.Request on Python 3 now handles multipart/form-
   data requests correctly. (#8052)

Other
-----
 - #8016, #8070

Twisted Words 15.5.0 (2015-11-18)
=================================

Features
--------
 - twisted.words.protocol.irc.IRC now has a sendCommand() method which
   can send messages with tags. (#6667)

Other
-----
 - #8015, #8097


(wiz)