Normalize the encoding names for Latin-1 and UTF-8 to

'latin-1' and 'utf-8'.

These are optimized in the Python Unicode implementation
to result in more direct processing, bypassing the codec
registry.

Also see issue11303.

Lib/sqlite3/test/types.py

@@ -85,7 +85,7 @@ def __init__(self, _val):
             if isinstance(_val, bytes):
                 # sqlite3 always calls __init__ with a bytes created from a
                 # UTF-8 string when __conform__ was used to store the object.
-                _val = _val.decode('utf8')
+                _val = _val.decode('utf-8')
             self.val = _val
 
         def __cmp__(self, other):