Python dependency should be upgraded to 2.3

[Mats Bengtsson]

Hi,

I just tried to compile the latest CVS version and noticed that you
now use the Python module optparse (in musicxml2ly.py), which
was introduced in Python version 2.3. Up til now, it possible to use
Python as old as 2.1. Please update the installation instructions and
configuration script or consider using some alternative to optparse
which is available also in older versions of Python.

  /Mats

--
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        Mats Bengtsson
        Signal Processing
        Signals, Sensors and Systems
        Royal Institute of Technology
        SE-100 44  STOCKHOLM
        Sweden
        Phone: (+46) 8 790 8463                         
       Fax:   (+46) 8 790 7260
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        WWW: http://www.s3.kth.se/~mabe
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