2.2.1 released

It's time again for today's daily release. Just fixing a minor problem
with those quotes and semicolons, with regards to the alias command.

- Fixed bug #525: alias command was losing quotes around arguments,
  which could lead to unexpected interpretation of semicolons.
- Changed read, methods, and lock commands to read just the next
  argument, rather than all of the arguments as one. They only take
  one argument anyway.
- Changed stderr, stdin, and stdout to read their arguments as-is.

nathan