[Distutils] Buildout: syntax for Extending sections (macros)

[Suresh V.]

The documentation at pypi seems to be missing the "=" from "<=" which 
caused a little bit of added confusion for me (not in the example code 
but in the descriptive part of the documentation).

See:

http://pypi.python.org/pypi/zc.buildout#extending-sections-macros

Suresh