Doc updates for customizing.txt, start of index generation customizing.txt: fix doc on schema.py. Documented obsolete db schema declaration/initial data method. doc on config.ini is incomplete. doc as such. Add doc for [rdbms]: backend, cache_size, sqlite_timeout document Interval schema type. Also change formatting for list of schema types to description list from regular list so types are more visible. add link to roundup wiki for schema chnge examples. fix formatting for postfix config. document Rest Access and Xmlrpc Access permissions; change classic schema.py example to include them. doc db/backend_name as obsolete, conf.py [rdbms] backend used instead. start adding index references conf.py: update copyright year index.txt: add link to genindex.html. _templates/layout.html: change code to make index output work. Not sure what the change does, just monkey pasting from sphinx basic/layout.html

Debugging Aids
--------------

Try turning on logging of DEBUG level messages. This may be done a number
of ways, depending on what it is you're testing:

1. If you're testing the database unit tests, then set the environment
   variable ``LOGGING_LEVEL=DEBUG``. This may be done like so:

    LOGGING_LEVEL=DEBUG python run_tests.py

   This variable replaces the older HYPERDBDEBUG environment var.

2. If you're testing a particular tracker, then set the logging level in
   your tracker's ``config.ini``.

SENDMAILDEBUG
=============

Set to a filename and roundup will write each email message
that it sends to that file instead to the internet. 
This environment variable is independent of the python -O flag.