MinGW GCC 4.8 with GDC

[scriptjunkie via D.gnu]

When you say

> Download the following packages:
>
> binutils-2.23.1.tar.gz
> cloog-0.18.0.tar.gz
> gcc-4.8-20130303.tar.bz2
> gmp-4.3.2.tar.bz2
> isl-0.11.1.tar.bz2
> mingwrt-3.20-mingw32-src.tar.gz
> mpc-1.0.1.tar.gz
> mpfr-3.1.1.tar.bz2
> w32api-3.17-2-mingw32-src.tar.lzma

Where do I get those packages? I don't see them all in the MinGW
Installation Manager. Sorry, more of a linux guy and not familiar
with MinGW. Also, it would be super-helpful if these instructions
were in the README in the repository, as it took me a while to
find them here.