func_get_args() can not be used as argument pre-5.3.0.

Trying to do so generates an obscure fatal error on
PHP 5.2.0.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5430 2fea6a4d-a838-0410-917b-93a53c48e9d2
Conditional styling.

git-svn-id: http://textpattern.googlecode.com/svn/development/4.x@5431 2fea6a4d-a838-0410-917b-93a53c48e9d2