[Featureserver] SQLite

[Brent Pedersen]

hi, i'm on an sqlite kick. so i've uploaded an sqlite datasource for
feature server:
http://dev.featureserver.org/ticket/3
and the code:
http://dev.featureserver.org/attachment/ticket/3/SQLite.py
it's just cribbed from DBM.py and PostGIS.py so there's  likely stuff
in there from both of those that shouldnt be, but it's functional.

the justification is that it's more portable than postgis, more easily
updated outside of FeatureServer than DBM, and accessible via any
language.
it has no extra dependencies in python2.5. and requires pysqlite2 in <=2.4

if i need to do anything for this to go into the project, i'm happy to do so.
-brent