Instead of relying on /dev/fd/3 being available, make a named pipe to
provide input to crafty. This should allow package building to succeed
and has no negative consequences that I know of. It is not clear at
the moment why /dev/fd/3 is not present in the chroot'ed package building
environment, but I wanted to get a fix in before the DP1 ports freeze.
I arrived at this solution after helpful discussions with