Emacs key bindings

• Stable - Useable by all. Bugs are rare.
• SqueakL - The license of Squeak from Apple. The only license we allow for inclusion in base Squeak.
• Squeak3.4 -
• Development tools - Add-on development tools for Squeak.

The ASCII code for $( was set as 27, which I'm not sure how that could work.
It should be 40. Now, when in Emacs mode, you can 'alt-shift-9' or 'alt-('
to make a set of parens "()". Also, setting the 40 value enables the other
ctrl commands for "[]" and "<>". These are driven by ctrl, not alt.
(alt=shift-cmd I believe on Mac)