imported, i.e. the binutils-2.16.1 release and not the branch that
I worked with originally.
Lot of the changes are due to the update of the mknative script RCSId.
* Regen files with proper OS names and version numbers.
* Clean up toolchain2netbsd somewhat, to get it ready to be cross-host
compatible (more work to be done here, but it's getting closer).
* Add framework for gdbreplay and gdbserver, but hold off on enabling these
by default until low-nbsd.c is verified to work everywhere.
