[SQLObject] Adding description field to col.py

[Samir P. <sp...@ci...>]

In class SOCol, does it make any sense to add desc argument with following:

if desc:
    self.desc = desc
else:
    self.desc = name

I found it quite useful in creating web page. For ex. field
fname can have description "First Name" which can be used in creating web 
forms.

- Samir