Changes in libsoup from 2.27.2 to 2.27.4:

	* Added SoupContentSniffer and the "content-sniffed" signal on
          SoupMessage, to do Content-Type sniffing per the HTML5 /
          draft-abarth-mime-sniff algorithm. [#572589, Gustavo Noronha
          Silva]

	* Updated the earlier SoupSession timeout fixes ([#574414],
          [#578928]) so that async connect() also times out [#588177,
          Mark Nauwelaerts] and SSL works on Windows again [#587910,
          Fridrich Strba].

	* Fixed the behavior on a 301 response to a POST to match
          real-world usage rather than what the spec says. (We were
          doing the right thing on 302 and 303, but had missed 301.)
	  [#586692]

	* Changed configure so that if GNUTLS isn't found then it
	  errors out, rather than silently building an SSL-less
	  libsoup. Configure with --disable-ssl if you actually don't
	  want SSL. [#584955]