GXemul Code2

Using bool instead of int.

Adding -A command line option, to disable colorized output.

Plan for per-subsystem verbosity levels for debug messages.

Fix warning noticed by gcc6.

-e can be used without -E.

Ignore warnings about ipx-in-ip, sent by NetBSD during shutdown?

Subtle colorized output when stdin/stdout are connected to a tty, to make it quicker to interpret text output.

Colon instead of period.

Adding a comment about SIGINFO-like message.

Removing old documentation head and tail files.