Update python examples to work with Python 2.6

- Newer versions of Python seem to need an __init__.py file
- Put apilib interface functions in alphabetical order in
  preparation for adding new functionality
- Document dependency on pyparsing
Extend python code to support new API features for SDH/SONET hardware
Eliminate warning when building for *nix systems without 'mingw'
Correct build for Windows systems
Tidy Python example code

- Remove enable_l1.py (use gth.py instead)
- Correct some bugs
- Add support for 'zero'
- Update the README file
- Handle errors in queries
Add 'wide_recorder' demo in Python
Simplify Python L1 check code
Fix python 'unmap' operation
Update python examples to work with Python 2.6

- Newer versions of Python seem to need an __init__.py file
- Put apilib interface functions in alphabetical order in
  preparation for adding new functionality
- Document dependency on pyparsing
Merge branch 'ml_python_code'
Remove duplicated functions
Add support for -v switch in python sample code

-v is verbosity, e.g. try -v3