writing gnumeric functions in python

[ratan at c1592265-a.stcla1.sfba.home.com]

According to Skip Montanaro  <skip at pobox.com>:
> 
>     1. Do I have to add functions to the central startup file
>        (.../python/gnumeric_startup.py) or can I define a Python module
>        somewhere in my personal directory tree that will get loaded?

A quick look at this file shows that it sources $HOME/.gnumeric/rc.py

- ratan