[TUHS] struct(1) updating - progress

[Arnold Robbins]

Hello All.

If anyone is interested in struct, I have completed updating it
for modern day systems. Thanks to Jay Logue for invaluable help in
completing the work and to Bakul Shah for his interest and support.

See https://github.com/arnoldrobbins/struct; I have merged the
modernization work into the master branch. The README.md describes
what was done in more detail.

Doug McIlroy - if you want me to add anything to the README.md, please send
it on and I will do so, quoting you as appropriate.

Jay Logue and Bakul Shah - if you want me to add anything to the
README.md, please let me know (privately).

Thanks,

Arnold