Port to x86-64

[Andrew Cagney]

> Working on a branch might be the better idea.  Shall Jiri send his ssh
> key to you for setting this up?  Jiri, what do you prefer?

Just FYI, there is a bit of a dance to follow here.  To get access to
the CVS repository you need to do the following:

	o	have assignments et.al. in place

	o	have access to SSH

	o	demonstrate the ability
		to submit patches that follow
		both GDB's and the FSF conventions.

		I suggest starting with something
		small and mindless.

Among other things, this provides a mechanism through which new
contributors can publically and transparently establish their
credentials.

	Andrew