Comment 3 for bug 913618

Adding a color bit is minimal necessary change: H. J. Lu's dependency
patch is crap.

Note that "3" == 0b011 isn't a color bit. It's entirely
possible (even if insanely unlikely) to have all of i386/x86_64/x32
set in the same file

Adding a color bit forces a reorganization to better classification.
There aren't bits left. And other means than "color" need to be
devised.