Add skeleton implementation of array.array and bytearray.

So far, only storage, initialization, repr() and buffer protocol is
implemented - alredy suitable for passing binary data around.
diff --git a/py/mpqstrraw.h b/py/mpqstrraw.h
index 328cb73..10b1fc0 100644
--- a/py/mpqstrraw.h
+++ b/py/mpqstrraw.h
@@ -37,7 +37,9 @@
 Q(abs)
 Q(all)
 Q(any)
+Q(array)
 Q(bool)
+Q(bytearray)
 Q(callable)
 Q(chr)
 Q(complex)