[tlbuild] luajittex can now be built on x86_64-cygwin

[Peter Breitenlohner]

On Sat, 19 Sep 2015, Ken Brown wrote:

> Index: source/m4/kpse-setup.m4
> ===================================================================
> --- source/m4/kpse-setup.m4	(revision 38399)
> +++ source/m4/kpse-setup.m4	(working copy)
> @@ -85,7 +85,7 @@
> AS_CASE([$enable_]Kpse_Pkg,
>         [yes | no], [:],
>           [AS_CASE([$host],
> -                   [alpha* | sparc* | x86_64-*-cygwin | powerpc-*-darwin* ],
> +                   [alpha* | sparc* | powerpc-*-darwin* ],
>                      [AC_MSG_NOTICE([$host -> `--disable-]Kpse_Pkg['])
>                       ac_configure_args="$ac_configure_args 
> '--disable-]Kpse_Pkg['"])])
> ])

Hi Ken,

but don't forget to rebuild the top-level configure (or alternatively
configure with --enable-luajittex --enable-mfluajit).

=============

I have just imported icu-56.1 (rc).  Please check if everything works for
Cygwin, the patch to use the Posix interface is always somewhat involved.

Regards
Peter