[TUHS] retro-fuse support for v7 filesystems

[Jay Logue]

Just a quick note to announce that the retro-fuse project now supports 
mounting seventh-edition file systems for read and write on Linux and 
MacOS.  As was done for v6, the project incorporates the actual 
filesystem code from v7 Unix, lightly modernized to run in user space on 
current systems.

The code is available on github for anyone who's interested: 
https://github.com/jaylogue/retro-fuse

--Jay