Mingw compilation of ldap.

[martyn.2.russell@bt.com]

> I have noticed that in build 2.0.27 and 2.1.8, neither have complete
> support for MinGW and MSYS.  
> I go to build with ./configure and it fails at checking for sys/switch.h.
> 
> Now if the configure script was catered for MinGW, it would know that MSYS
> doesn't come with sys/switch.h (which is required by the socket code) and
> also would not need it because MSYS uses the windows API to do all of
> that.
> 
> Is there a fix out there for this, or will there be at some point?
> 
> Regards,
> Martyn
>