Backport r57105 and r57145 from the py3k branch: UTF-32 codecs.

Lib/encodings/utf_32_be.py

@@ -0,0 +1,37 @@
+"""
+Python 'utf-32-be' Codec
+"""
+import codecs
+
+### Codec APIs
+
+encode = codecs.utf_32_be_encode
+
+def decode(input, errors='strict'):
+    return codecs.utf_32_be_decode(input, errors, True)
+
+class IncrementalEncoder(codecs.IncrementalEncoder):
+    def encode(self, input, final=False):
+        return codecs.utf_32_be_encode(input, self.errors)[0]
+
+class IncrementalDecoder(codecs.BufferedIncrementalDecoder):
+    _buffer_decode = codecs.utf_32_be_decode
+
+class StreamWriter(codecs.StreamWriter):
+    encode = codecs.utf_32_be_encode
+
+class StreamReader(codecs.StreamReader):
+    decode = codecs.utf_32_be_decode
+
+### encodings module API
+
+def getregentry():
+    return codecs.CodecInfo(
+        name='utf-32-be',
+        encode=encode,
+        decode=decode,
+        incrementalencoder=IncrementalEncoder,
+        incrementaldecoder=IncrementalDecoder,
+        streamreader=StreamReader,
+        streamwriter=StreamWriter,
+    )