samples: add Terra samples

source: https://github.com/zdevito/terra/tree/master/tests

samples/Terra/hasbeenfrozen.t

@@ -0,0 +1,33 @@
+struct A {
+	a : int;
+	b : int;
+	c : &B
+} and struct B {
+	a : &A
+}
+
+local a = global(A)
+
+
+terra foo()
+	var b : B
+	return a.a + a.b
+end
+
+function A.metamethods.__staticinitialize(self)
+	print("A")
+	assert(A:iscomplete())
+	a:get().a = 4
+end
+
+function B.metamethods.__staticinitialize(self)
+	print("B")
+	assert(B:iscomplete())
+	a:get().b = 3
+	foo:gettype(function()
+		assert(foo() == 7)
+		a:get().a = a:get().a + 1
+	end)
+end
+
+assert(foo() == 8)