Here are some patches to make beta17 work with Cray Unicos 9.

This consists of two changes. First nawk believes that the string
"#else" means something to it. Changing to "\#else" seems to work ok.

Then join() is defined by the system (doing the same as join(1)), so I
changed its name to zjoin(). After this everything seems to work, but
there might be more problems - Crays *are* very unusual after all.

/Johan