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
..
EmptyNodeList.h	eb72d50f44 Import gcc 5.2.0 from tarball	9 lat temu
NamedInputStream.h	eb72d50f44 Import gcc 5.2.0 from tarball	9 lat temu
StandaloneDocumentType.h	eb72d50f44 Import gcc 5.2.0 from tarball	9 lat temu
StandaloneLocator.h	eb72d50f44 Import gcc 5.2.0 from tarball	9 lat temu
XMLJ$XMLJShutdownHook.h	eb72d50f44 Import gcc 5.2.0 from tarball	9 lat temu
XMLJ.h	eb72d50f44 Import gcc 5.2.0 from tarball	9 lat temu