GitLab

Updated usrsctp to fix various issues for windows (using changes pushed upstream) and unified SHA1 treatment with libjingle. 

Note: HAVE_SCTP is still currently turned off for windows (while investigating an apparent issue in win xp)

(patch from issue 19522005; exactly the same, except HAVE_SCTP is not turned on for windows)

BUG=

Review URL: https://chromiumcodereview.appspot.com/21968004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@215983 0039d316-1c4b-4281-b951-d872f2087c98