Fixed our symbol table for depth-only scopes
Fixed our symbol table for depth-only scopes

We had been using the Array append method, which returned a new array,
not editted ours in place.

So now we instead use a list ref of scopes to hold our new scopes.  That
was why before we could only pop up scopes and be correct.  Now this way
everything works as intended (sort-of).

What's missing from the puzzle is still a way to correctly traverse
them, but at least the information is there!

travisby/calab-compiler,travisby/calab-compiler