Update .htaccess for compatibility with Apache 2.4+.

Apache 2.4 dropped the "Order" syntax in favor of the mod_authz_core module.

Before this fix, the .htaccess was benignly ineffective for Apache 2.4 users and possibly filling their error logs. This new version should be compatible with both Apache 2.2 and 2.4.


git-svn-id: https://plugins.svn.wordpress.org/akismet/trunk@1028901 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated changelog.


git-svn-id: https://plugins.svn.wordpress.org/akismet/trunk@1028904 b8457f37-d9ea-0310-8a92-e5e31aec5664