Featureserver

* OSM Service should not export null columns. Patch from Stephan Holl.
* Make PostGIS ds more resilient to the use of special characters in
tablenames. Patch from Stephan Holl.
* Add atom-pub style links to KML
* Fix BDB lockfile issue.
* Update FeatureServer to support not allowing JSON callbacks (security)
* OGR error reporting in WFS.py
* Add SQLite datasource from Brent Pederson.

* Add temporary GeoJSON-spec tracking module. This module will eventually
become the default JSON input/output, but right now, it's in a seperate
module so people can have something different to code against.
* Add support for content-negotiation in the Server. This is *only* an
exact match, but I recommend that anyone posting content specify their
'accept' header -- in the future, this may change, and by default
browsers will get text/html content.
* GeoRSS RSS 2.0 input for GeoRSS simple is now supported.
* Fix PostGIS to_wkt following report from Stephan Holl

* Fix bug in OGR datasource unicode support

* Update DBM code to sync to disk more often.
* Minor KML updates.

* Fix posting of features with mod_python, reported by Howard Butler
* Update mod_python docs

* Fixed encoding bug in wsgi handler
* Changed wsgi handler exceptions to 500s instead of 200s
* Fixed typo in BerkeleyDB datasource, reported by Tom Kralidis