py: Allow +, in, and compare ops between bytes and bytearray/array.

Eg b"123" + bytearray(2) now works.  This patch actually decreases code
size while adding functionality: 32-bit unix down by 128 bytes, stmhal
down by 84 bytes.

tests/basics/bytes_compare2.py

@@ -1,7 +1,12 @@
-import array
-
 print(b"1" == 1)
 print(b"123" == bytearray(b"123"))
 print(b"123" == "123")
-# CPyhon gives False here
+print(b'123' < bytearray(b"124"))
+print(b'123' > bytearray(b"122"))
+print(bytearray(b"23") in b"1234")
+
+import array
+
+print(array.array('b', [1, 2]) in b'\x01\x02\x03')
+# CPython gives False here
 #print(b"\x01\x02\x03" == array.array("B", [1, 2, 3]))