nnesse/minwin-gcc-5-2: A patched gcc 5.2 enabling a new 'minwin' target that does not link to the Microsoft C library.

Niels Nesse eb72d50f44 Import gcc 5.2.0 from tarball		9 lat temu
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miniunz.vcproj	eb72d50f44 Import gcc 5.2.0 from tarball	9 lat temu
minizip.vcproj	eb72d50f44 Import gcc 5.2.0 from tarball	9 lat temu
testzlib.vcproj	eb72d50f44 Import gcc 5.2.0 from tarball	9 lat temu
testzlibdll.vcproj	eb72d50f44 Import gcc 5.2.0 from tarball	9 lat temu
zlib.rc	eb72d50f44 Import gcc 5.2.0 from tarball	9 lat temu
zlibstat.vcproj	eb72d50f44 Import gcc 5.2.0 from tarball	9 lat temu
zlibvc.def	eb72d50f44 Import gcc 5.2.0 from tarball	9 lat temu
zlibvc.sln	eb72d50f44 Import gcc 5.2.0 from tarball	9 lat temu
zlibvc.vcproj	eb72d50f44 Import gcc 5.2.0 from tarball	9 lat temu