Log Message:
Update geeklog to 1.7.2.

Feb 20, 2011 (1.7.2)
------------

Note: This will be the last Geeklog version to work on PHP 4. We will provide
security fixes for this version until 2012. Future versions of Geeklog will
require PHP 5.2.0 or later. For details, please see
http://www.geeklog.net/article.php/end-of-php4-support

- PostgreSQL fixes:
  * It wasn't possible for several Geeklog instances to share a Postgres
    database (bug #0001251) [Rouslan]
  * Fixed dbSave [Dirk]
  * Fixed error reporting [Dirk]
  * Fixed compatibility with PHP 4 [Dirk]
- Fixed replacing the [imageX] tags when changing a story's id (bug #0001256)
  [Dirk]
- Fixed Static Pages plugin to work with PHP 4 (bug #0001239) [Tom]