Aaron Wells authored Jun 09, 2014 and Robert Lyon committed Jul 01, 2014

Old format: $CFG->plugin->blocktype->clippy->agent = 'merlin';
New format: $CFG->plugin_blocktype_clippy_agent = 'merlin';

The old format caused a strict standards warning.

Change-Id: I8ae2735ea3d3df913c0527bae7771e6f01dc82ca