Special Build of OpenLayers
---------------------------

At the time the project was conceived, a newer version of OpenLayers was needed
than the latest release, for some features and bug fixes.

Subversion checks out trunk from OpenLayers, at a given revision.

Then, a compressed version of OpenLayers was created from the check out.

To upgrade to a newer version from source repository, update all external references
to the desired revision. Then, run python script to generate new compressed version.
Finally, test and commit changes.

> cd <dir>  (directory where readme.txt is located
> svn propedit svn:externals .
> svn up
> cd build
> ./build.py
> rm ../OpenLayers.js
> mv OpenLayers.js ../.
> cd ..
(test)
> svn ci