* (bug 6711) Add $wgAddGroups and $wgRemoveGroups to allow finer control over
usergroup assignment.
* Introduce 'UserEffectiveGroups' hook; see docs/hooks.txt for more information
+* (bug 10387) Detect and handle '.php5' extension environments at install time
+ Patch by Edward Z. Yang.
+
== Bugfixes since 1.10 ==