W32 build fixes for gnupg-2.0.19

[NIIBE Yutaka]

Hello,

Thanks for your effort and explanation.

On 2013-02-01 at 07:11 +0400, LRN wrote:
> On 26.01.2013 23:37, Werner Koch wrote:
> > On Sat, 26 Jan 2013 04:47, lrn1986 at gmail.com said:
> >> Subj is attached.
> > 
> > Please explain the problems you are trying to fix.
> The single problem is GnuPG not building with MinGW/MSys.

Well, then, my question is:

      Why on earth do you need to build GnuPG with MinGW/Msys, given
      we have another recommended way to build GnuPG for Windows?

Even if there were some valid reasons, I still have concern here.  I'm
afraid that it would result another incompatible GnuPG.  My major
concern is using smartcard/token and/or gpg-agent.  The GnuPG built
with MinGW wouldn't work well wrt PC/SC service and emulation of 
Unix domain socket.
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