Interactive fiction tools for Plan 9

A collection of ports to Plan 9 of tools for building and playing
interactive fiction files.  The "buildall" script builds and installs
the frotz and glulxe interpreters and the inform 6 programming
language and some utilities for manipulating z-machine files.  The
"buildlibc" and "buildvbcc" scripts are for a c-to-zmachine compiler.

inform: language and compiler for z machine files 
frotz: runs traditional zmachine files 
ztools: analyzes and disassembles z machine files
zrip: extracts zmachine files from zblorb archives
cheapglk: support library for glulxe
glulxe: 32-bit modern IF interpreter
vbcc: c to z machine asm compiler 
castle1.1: includes libc for vbccz

Please check each subdirectory for information on authorship and
licensing, each directory has different authors and license terms.

If your version of 9front is not completely up to date, you may
need to rebuild /sys/src/cmd/cpp to build cheapglk. The file cpp.h 
should be substituted for the original /sys/src/cmd/cpp/cpp.h.

Original changes and contributions: GPLv2.
Enjoy the fictional multiverse.