GOP-PROP 1: python formatting

[Graham Percival]

Proposal website:
http://lilypond.org/~graham/gop/gop_1.html


(this proposal will be rushed because nobody will argue against
it. Initial discussion 6 June, summary and tentative decision 8
June, implementation 10 June)

Proposal: let’s follow PEP-8.
http://www.python.org/dev/peps/pep-0008/

    * use 4 spaces per indentation level
    * never max tabs and spaces
    * Code indented with a mixture of tabs and spaces should be
      converted to using spaces exclusively 


Cheers,
- Graham