<ws2tcpip.h> since IPv6 is no longer optional (was it ever?)

Replace <winsock.h> with <winsock2.h> + <ws2tcpip.h>
(ala libcurl since IPv6 is not optional now).

we really have no use for reverse lookups of the address.

I truly hope these are the last reverse lookups we had lingering in the
code!

version of libcurl with different Windows versions. Current version of
libcurl imports SSPI functions from secur32.dll. However, under Windows NT
4.0 these functions are located in security.dll, under Windows 9x - in
secur32.dll and Windows 2000 and XP contains both these DLLs (security.dll
just forwards calls to secur32.dll).

Dmitry's patch loads proper library dynamically depending on Windows
version. Function InitSecurityInterface() is used to obtain pointers to all
of SSPI function in one structure.
: ----------------------------------------------------------------------

  Curl_ossl_connect(), the Curl_gtls_connect() function does not send the user
  certificate to the peer. In fact, it ignores the conn->data->set.cert field
  completely, it always uses the anonymous credentials. See
  http://curl.haxx.se/bug/view.cgi?id=1348930

 1.9 Where do I buy commercial support for curl?
 1.10 How many are using curl?
 6.7 What are my obligations when using libcurl in my commerical apps?

Edited a few other paragraphs slightly.

The LDAP code in libcurl can't handle LDAP servers of LDAPv3 nor binary
attributes in LDAP objects. So, I made a quick patch to address these
problems.

The solution is simple: if we connect to an LDAP server, first try LDAPv3
(which is the preferred protocol as of now) and then fall back to LDAPv2.
In case of binary attributes, we first convert them to base64, just like the
openldap client does. It uses ldap_get_values_len() instead of
ldap_get_values() to be able to retrieve binary attributes correctly. I
defined the necessary LDAP macros in lib/ldap.c to be able to compile
libcurl without the presence of libldap

same server

document

(http://curl.haxx.se/bug/view.cgi?id=1338648) which really is more of a
feature request, but anyway. It pointed out that --max-redirs did not allow
it to be set to 0, which then would return an error code on the first
Location: found. Based on Nis' patch, now libcurl supports CURLOPT_MAXREDIRS
set to 0, or -1 for infinity. Added test case 274 to verify.

(http://curl.haxx.se/bug/view.cgi?id=1337723) that curl could not upload
binary data from stdin on Windows if the data contained control-Z (hex 1a)
since that is treated as end-of-file when read in text mode. Gisle Vanem
pointed out the fix, and I made both -T and --data-binary take advantage of
it.

differences between OpenSSL and GnuTLS (that is probably a suitable subject
for a separate document...)

..\lib\timeval.c.

Added CURL_DISABLE_TFTP; tftp.c doesn't compile as-is.

in the man page, curl would send an invalid HTTP Range: header. The correct
way would be to use "-r [number]-" or even "-r -[number]". Starting now,
curl will warn if this is discovered, and automatically append a dash to the
range before passing it to libcurl.

bug #1326306

  #1334338 (http://curl.haxx.se/bug/view.cgi?id=1334338). When reading an SSL
  stream from a server and the server requests a "rehandshake", the current
  code simply returns this as an error. I have no good way to test this, but
  I've added a crude attempt of dealing with this situation slightly better -
  it makes a blocking handshake if this happens. Done like this because fixing
  this the "proper" way (that would handshake asynchronously) will require
  quite some work and I really need a good way to test this to do such a
  change.

it, it could then accidentally actually crash. Presumably, this concerns FTP
connections.  http://curl.haxx.se/bug/view.cgi?id=1330310

linked to the executable and not to the libcurld.lib
http://curl.haxx.se/bug/view.cgi?id=1326676

CURLE_COULDNT_RESOLVE_PROXY and CURLE_COULDNT_RESOLVE_HOST on resolving
errors (as documented).

(wrongly) sends *two* WWW-Authenticate headers for Digest. While this should
never happen in a sane world, libcurl previously got into an infinite loop
when this occurred. Dave added test 273 to verify this.

DEBUG_ADDRINFO to enable.

you set rtlibcfg=static for the make, then it would build with /MT. The
default behaviour is /MD (the original)."
http://curl.haxx.se/bug/view.cgi?id=1326665