http://curl.haxx.se/mail/archive-2008-10/0000.html
Done!

  function when built to support SCP and SFTP that helps the library to know
  in which direction a particular libssh2 operation would return EAGAIN so
  that libcurl knows what socket conditions to wait for before trying the
  function call again. Previously (and still when using libssh2 0.18 or
  earlier), libcurl will busy-loop in this situation when the easy interface
  is used!

HAVE_IOCTL_SIOCGIFADDR since it's needed to use SIOCGIFADDR and Watcom C
doesn't currently define it.

warnings

only

done!

  used. It has been used since forever but it was never a good idea to use
  unless explicitly asked for.

you use runtests.pl -g, will be sourced by gdb to allow additional fancy
or whatever you see fit

*_socket_all() and *_socket() aren't used at all but only *_socket_action()
is.

  resolves a host name from the given file, using the regular hosts syntax.

  GSS/kerberos authentication (http://curl.haxx.se/bug/view.cgi?id=2284386)

  when uploading files to a single FTP server using multiple easy handle
  handles with the multi interface. Occasionally a handle would stall in
  mysterious ways.

  The problem turned out to be a side-effect of the ConnectionExists()
  function's eagerness to re-use a handle for HTTP pipelining so it would
  select it even if already being in use, due to an inadequate check for its
  chances of being used for pipelnining.

upcomming work to support the broadest range of Autoconf versions

when the tests stall.

address, the one on the box libcurl is running, not the 'remote' one.

used, and define HAVE_IOCTL_SIOCGIFADDR if appropriate.

calls. Added a paragraph explaining that libcurl takes care of low-level
protocol details. Made a few minor edits.

enabled and FTP disabled.