Rune Serialize - Stabilization, Fix boolean casts and unary operator(s)

Rune Serialize - Stabilization, Fix boolean casts and unary operator(s)

* Stabilize the interpreter, don't mistreat data->istmp, don't mistreat
  data->storage to fake-out data->istmp operation.

* Allow the resolver to handle scope inheritance.

* Fix default locking modes for intent.

* Get rid of sanity checks against d->d_Storage (allow the resolver to
  have final say on d_Storage mechanics).

* Fix Run64 execution for Floating -> Bool casts.  The floating exp
  was being executed as a Run64 function when it is not compatible with
  int64_t.

* Fix Run64 execution for !exp.  This unary operator returns a boolean,
  so properly return a boolean.  In addition, the rhs might not be
  Run64 compatible so execute normally if the rhs is Floating.

* Fixes tests/float.d output for ! tests.