Git commits in Moodle 1.7.3 by mchurch

commit 992c135e1930af268b3736b854fb732c11425e2d
Author: mchurch <mchurch>
Date:   Sat, 28 Jul 2007 02:45:24 +0800
Tag:    v1.7.3

Bug #MDL-10632, fixing the use of 'delete_event'.