Update to 0.9.18:

Mon Jan 23 14:02:26 CET 2012
Fixed double-free if specified cipher was not valid (during
MHD_daemon_start).  Releasing 0.9.18. -CG

Thu Jan 19 22:11:12 CET 2012
Switch to non-blocking sockets for all systems but Cygwin
(we already used non-blocking sockets for GNU/Linux); also
use non-blocking sockets on Cygwin for HTTPS as this is
required to avoid DoS-by-partial-record via gnutls.  On
Cygwin, #1824 implies that we need to use blocking sockets
for HTTP on Cygwin for now. -CG

Thu Jan 19 17:46:05 CET 2012
Fixing use of uninitialized 'earliest_deadline' variable in
MHD_get_timeout which can lead to returning an incorrect
(too early) timeout (#2085). -tclaveirole

Thu Jan 19 13:31:27 CET 2012
Fixing digest authentication for GET requests with URI arguments
(#2059). -CG

Sat Jan  7 17:30:48 CET 2012
Digest authentication expects nonce count in base 16, not base 10
(#2061). -tclaveirole

Thu Jan  5 22:01:37 CET 2012
Partial fix for #2059, digest authentication with GET arguments. -CG

Thu Dec  1 15:22:57 CET 2011
Updated authorization_example.c to actually demonstrate the current
MHD API. -SG

Mon Nov 21 18:51:30 CET 2011
Added option to suppress generation of the 'Date:' header to be
used on embedded systems without RTC.  Documented the new option
and the configure options. -CG

(wiz)