[64bit] New packages: Cygwin 64-to-32bit cross-compiler

[Yaakov (Cygwin/X)]

I just uploaded a i686-pc-cygwin target cross-toolchain for the x86_64 
distro together with over a dozen sysrooted libraries.  All packages are 
named with a cygwin32- prefix and are under the Devel category.

In order to use this toolchain, install at least cygwin32-gcc-{core,g++} 
and all indicated dependencies.  Then, you can use cygport --32 to (try 
to) cross-compile your package.  Note that not all source packages can 
be cross-compiled, and some may require changes to your cygport(3), the 
build system, and/or the code in order to cross-compile correctly.

The following libraries are also currently available for the toolchain:
bzip2, cloog-isl, cloog-ppl, crypt, gettext, gmp, isl, libbfd, libffi, 
libiconv, libmpc, libtool, minizip, mpfr, ppl, zlib.

Please note that the versions of GCC and its dependencies 
(gmp/mpfr/libmpc/ppl/cloog-ppl/isl/cloog-isl) match the versions 
currently marked as *TEST* in the 32bit distribution, in the hope that 
the latter will soon be marked stable.

If you encounter any issues with this toolchain, or need particular 
libraries to be prioritized for addition, please let me know here. 
Also, if any "native" library maintainers want to take over their 
corresponding cross-libraries as well, just let me know; sources, as 
always, are in Ports git.


Yaakov