... instead of trying PASV, since PASV can't work with IPv6.

Reported-by: Vojtěch Král

... and make sure we can connect the data connection to a host name that
is longer than 48 bytes.

Also simplifies the code somewhat by re-using the original host name
more, as it is likely still in the DNS cache.

Original-Patch-by: Vojtěch Král
Bug: http://curl.haxx.se/bug/view.cgi?id=1468

Added support for a WITH_CARES option to be used when invoking nmake
via Makefile.vc. This option enables linking against both the DLL and
static versions of the c-ares libraries, as well as the debug and
release varients, depending on the value of DEBUG. The USE_ARES
preprocessor symbol is also defined.

Bug: http://curl.haxx.se/bug/view.cgi?id=1469
Reported-by: Thomas Klausner

...to avoid a session ID getting cached without certificate checking and
then after a subsequent _enabling_ of the check libcurl could still
re-use the session done without cert checks.

Bug: http://curl.haxx.se/docs/adv_20150108A.html
Reported-by: Marc Hesse

Bug: http://curl.haxx.se/docs/adv_20150108B.html

Bug: http://curl.haxx.se/docs/adv_20150108B.html
Reported-by: Andrey Labunets

Also, remove the log output of the resolved name is NOT in the cache in
the spirit of only telling when something is actually happening.

Reported-by: Michael Osipov

Otherwise, the fixes in the previous commits would only be applicable
to IDN and SSPI based builds and not others such as OpenSSL with LDAP
enabled.

Use 'TCHAR *' for local attribute variable rather than 'char *'.

Use 'TCHAR *' for local DN variable rather than 'char *'.

Due to the recent modifications this function is no longer used.

ldap.c:98: warning: extra tokens at end of #endif directive

ldap.c:802: warning: comparison between signed and unsigned integer
            expressions

The unescapped DN was not freed after a successful character conversion.

ldap.c:738: error: macro "LDAP_TRACE" passed 2 arguments, but takes
            just 1

ldap.c:89: warning: extra tokens at end of #endif directive

As host.name may be encoded use dispname for infof() failure messages.

As we get the length for the DN and attribute variables, and we know
the length for the line terminator, pass the length values rather than
zero as this will save Curl_client_write() from having to perform an
additional strlen() call.

Fixed memory leaks from commit 086ad799 as was noted in the commit
comments.

Fixed memory leaks from commit 086ad799 as was noted in the commit
comments.

curl_ntlm_core.c:146: warning: passing 'DES_cblock' (aka 'unsigned char
                      [8]') to parameter of type 'char *' converts
                      between pointers to integer types with different
                      sign