Cell Toolchain - part II - act I - running in the gcc-cell lair

since:
- gcc-cell is quite a different beast (patches here, newcode there, backports everywhere!)
- diffing against the nearest gcc already in portage lead to a small 22MB patch

I just decided to use the provided tarball and live with it, that means that you have now also gcc-cell available in portage. Something else is almost ready... but I think I could sleep a bit now ^^;