[Truffle] Basic support for tainting.
[Truffle] Remove some notDesignedForCompilations accidentally introduced by inlining.
[Truffle] Read post arguments in reverse - not sure how this was working before.
[Truffle] Fix modules without a name.
[Truffle] Fix the resulting value from a multiple assignment with a single lexical RHS value.
[Truffle] We can just use Java Strings for dispatch - no need to create a RubyString.
[Truffle] Expand the behaviour of array cast to better support some parts of multiple assignment.