A patch to bypass MS' sillyness with regard to IPv6 and getaddrinfo().

The CURLDEBUG part is to avoid redefinition warning caused by memdebug.h. If
ENABLE_IPV6 isn't enabled, it doesn't matter since we never call
getaddrinfo(). Allthough we could to support weird protocols like SOCK_RDM
that Win-2K/XP has.

certainly doesn't need the OS define.

It is only undefined when this file is included by others (like ares) and
in those cases it doesn't matter.

defines are in setup.h.

because it is now possible to have both WIN32 and HAVE_CONFIG_H defined.

FORMAT_OFF_T to allow additional options to get specified, like with '"%5"
FORMAT_OFF_T'.

- Also, we must not assume that SIZEOF_CURL_OFF_T is defined, as this file
gets included from the ares dir at times and then it isn't defined.

define our internal CURL_FORMAT_OFF_T define, we don't use the global one!

This works by magicly starting up a new thread that can be killed when the
timeout is reached. testtesttest!

so that the automatic testing hosts will test these changes over the weekend.

recv() and we no longer attempt to ignore the SIGPIPE signal.

belong in the public header file. They are not in our name space so we
should not set them globally.

file instead

build libcurl to use ares for asynch name resolves.