Make error code become EnumItems to get a better string representation.

git-svn-id: https://svn.erp5.org/repos/neo/branches/prototype3@1099 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/protocol.py

@@ -301,15 +301,17 @@ packet_types = Enum({
 })
 
 # Error codes.
-NO_ERROR_CODE = 0
-NOT_READY_CODE = 1
-OID_NOT_FOUND_CODE = 2
-SERIAL_NOT_FOUND_CODE = 3
-TID_NOT_FOUND_CODE = 4
-PROTOCOL_ERROR_CODE = 5
-TIMEOUT_ERROR_CODE = 6
-BROKEN_NODE_DISALLOWED_CODE = 7
-INTERNAL_ERROR_CODE = 8
+error_codes = Enum({
+    'NO_ERROR_CODE': 0,
+    'NOT_READY_CODE': 1,
+    'OID_NOT_FOUND_CODE': 2,
+    'SERIAL_NOT_FOUND_CODE': 3,
+    'TID_NOT_FOUND_CODE': 4,
+    'PROTOCOL_ERROR_CODE': 5,
+    'TIMEOUT_ERROR_CODE': 6,
+    'BROKEN_NODE_DISALLOWED_CODE': 7,
+    'INTERNAL_ERROR_CODE': 8,
+})
 
 # Cluster states
 cluster_states = Enum({