Comparison between different bracket and normal tuples
will now take into account the delimiter type. This solves strange
non-locality issues in the compiler due to this false equality, and is
more consistent with Janet's otherwise strong equality philosophy.
Add support for using [& rest] to match the remaining values
in an array or tuple when destructuring.
the rest pattern is implemented by pushing remaining values in the
rhs to the stack once & is found on the lhs.
Then tuple is called and the result is assigned
to the next symbol on the lhs.
This commit DOES NOT implement handling for malformed patterns.
