Array and iterator types for NQP.

This provides the proper NQP semantics for hash iteration (that is,
a .key and .value method).

nqp-src/NQPCORE.setting

@@ -554,6 +554,29 @@ my class NQPMu {
     }
 }
 
+# A few bits when we're bootstrapping everything 6model-style rather than using
+# Parrot-supplied things.
+my class NQPArray is repr('VMArray') {
+    method push($value) { nqp::push(self, $value) }
+    method pop($value) { nqp::pop(self) }
+    method unshift($value) { nqp::unshift(self, $value) }
+    method shift($value) { nqp::shift(self) }
+}
+nqp::setboolspec(NQPArray, 8, nqp::null());
+my class NQPArrayIter is repr('VMIter') { }
+nqp::setboolspec(NQPArrayIter, 7, nqp::null());
+my class NQPHashIter is repr('VMIter') {
+    method key() { nqp::iterkey_s(self) }
+    method value() { nqp::iterval(self) }
+    method Str() { nqp::iterkey_s(self) }
+}
+nqp::setboolspec(NQPHashIter, 7, nqp::null());
+nqp::sethllconfig('nqp', nqp::hash(
+    'slurpy_array', NQPArray,
+    'array_iter', NQPArrayIter,
+    'hash_iter', NQPHashIter
+));
+
 # From src\core\NQPCapture.pm
 
 my class NQPCapture {