nocrew's PDP-11 stuff

WORK TO DO

• PDP-11 support for GNU binutils.
• Improve PDP-11 support in GCC.
• Add JIT compilation to PDP-11 emulators.

RELATED SITES

• pdp11.org, general information about the PDP-11.
• The PDP-11 Unix Preservation Society.
• 2.11BSD
• Yet another PDP-11 Page
• Tim Shoppa's PDP-11 software archives.
• SIMH, Bob Supnik's historical computer simulator.