dos2unix bin/local-example
Tweak wording on JAVA_HOME error
Consolidate shell scripts to subcommand-based approach
Shift subcommand help to Prolog code

I'm not entirely comfortable with this change because it's not the
Prolog code that's handling the commands, but it seems like the way
to a uniform help system
Remove scripts obsoleted by subcommand handler
Document switch to subcommand infrastructure
Remove Windows batch files that would be replaced by nimrodel subcommands