Fixing do.
Changed how do compiles code.

do could reasonably used with either an expression or a statement. To
accomodate both, do now assumes it is compiling a statement *unless* the
first character of the code is '=', in which case it assumes an
expression.
Fix typo.
Fix stupid mistake.
More WIP.

Trying to figure out why multiple return values are wrong.
More WIP.
More more WIP.
Fixed do.