Rescuing switch, AND and OR patterns, guards, and continue

[Brian Goetz]

Since everybody's been pestering me with questions offline, I've dropped 
another document that outlines our thinking to date on how we'd extend 
switch to support patterns (in both expression and statement form.)

     http://cr.openjdk.java.net/~briangoetz/amber/switch-rehab.html

Warning: it's rough.  Again, mostly to put the ideas in your head, and 
let them stew there for a while.