add messages removed during type blocks integration

adding these messages makes the "make list" block mutator work again

Change-Id: Ic9e9322e513596fac095160aab30271e77125a51
Fix quotifyForREPL to properly handle unicode characters.

Change-Id: I1bb8d92043551ca4b84597a7b49cb9e11c5d4b79
prevent changing pre-defined set/get variables during renames

if you already have a local variable "x", and have a set block referring to that variable, when you add another variable, it will be renamed to "x2" and the variable in the set block will now remain "x" (instead of the previous buggy behavior that made the set block change to "x2")

Change-Id: I58334b2abc1dc603d43e15c97485e58765f5e329