Attrnames and package names should be as close as possible to avoid confusion.
I took care not to confuse the two mpc things during the mass-replace,
so hopefully I suceeded (tarball still builds).
Even if using profiledbootstrap. This was unsafe before 4.8, and
then the documentation was not fixed on time.
The documentation got fixed here:
c763997f34
But the actual code was already fixed here:
5d2fca09d5
So this is safe both for GCC 4.8 and GCC 4.9.
