samples: add Terra samples

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

samples/Terra/fncalltest.t

@@ -0,0 +1,16 @@
+
+
+
+terra foo()
+
+end
+
+
+terra bar()
+	foo()
+	var what = foo
+	--what()
+end
+
+bar:compile()
+