Rule one of winsock and other one-offs (even unix EINTR) ... blocking
  isn't necessarily blocking.  Should not have changed this in the prior
  commit, and adding the same retry to the -1/EAGAIN|EINTR case.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@97423 13f79535-47bb-0310-9956-ffa450edef68