Correct mapping of Python codec name to C encoding name for UTF-8 (the C lib

doesn't seem to like "UTF-8").

Removed the UTF-8 aliases since these should be available for all locales.

Tools/i18n/makelocalealias.py

@@ -37,6 +37,10 @@ def parse(filename):
             encoding = encoding.replace('-', '')
             encoding = encoding.replace('_', '')
             locale = lang + '.' + encoding
+            if encoding.lower() == 'utf8':
+                # Ignore UTF-8 mappings - this encoding should be
+                # available for all locales
+                continue
         data[locale] = alias
     return data