Error Parser Release 0.5

This release adds support for Python. More specifically, the parser is now able to generate code that can be used by Python to access error codes created outside Python (kept in the XML error file of Error Parser)

The generated code is either a C header file for inclusion in extended modules or a pure Python file. In both cases, two dict objects are created to map symbolic error names and error numbers (one of the dict uses the number as the key, the other one uses the name).