phpbb/phpbb3 — pull request #713 by brunoais (2012-04-05 09:53:52+00:00)
Title: [ticket/10575] Fixing non-static access to static functions get_instance

These changes should solve the strict standards error about accessing
the non-static get_instance() in a non-static way.
For that, I changed the get_instance methods to static methods.

PHPBB3-10575