Make network buildable on all MSYS flavours

[awson]

The first commit simply refreshes GNU config (current is 8 years old).

The second removes wspiapi.h references which breaks things when the package is built with mingw-w64-based GHC distributions (it is an official 64-bit GHC, and my private 32-bit GHC port, which I want to propose to replace current mingw-based 32-bit GHC when I have time). Wspiapi only exists on pre-XP windows' which aren't supported by recent GHC/network anyway AFAIUI.

Third makes configure recognize 'mingw64' os part of a configure triplet. It is current preferred configuration when building things with 64-bit windows GHC under MSYS2.

[schernichkin]

Ok, it still non-functional on win_64 by default (when using cabal install with no additional flags). Build is ok, but program will fail with run-time error: https://gist.github.com/schernichkin/11143340

[tibbe]

@schernichkin could you please file this as a separate bug? Also, I can't make much of your gist. How does it fail? What's the error message?

[schernichkin]

I will post separate bug as soon as I`ll be able to isolate it and reproduce on small program. Currently this is a part of lager application which uses network, http-conduit and so on. The runtime behaviour - application crash (no error messages). It may take few days.

[schernichkin]

I've traces source source of the error, it in x509-system package, not in network. So network itself working well on my system.

[tibbe]

@schernichkin thanks for investigating.

[Bodigrim]

As a Hackage trustee I marked network-2.4.2.1 and network-2.4.2.2 as deprecated since prior to this patch (which landed in network-2.4.2.3) the package was unbuildable on Windows. This old versions keep appearing in build plans for (yet unreleased) cabal build --prefer-oldest.