Accept * as well as + in varargs arg list.

Changed comparison operators.

For the latter we must keep track of the current block's type.
(We can't continue through a try statement, sigh.()

are the same -- 0 and 0.0 compare equal but should be considered different
here!

optimization.

Document and fix code generation for try statements.
Use two bytes for all arguments.
Avoid duplicate entries in lists of constants and names.