RewriteLock is a _global_ facility of the rewrite engine, so make sure the

directive can only be used in a global context and not within any
<VirtualHost> sections, etc.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@83103 13f79535-47bb-0310-9956-ffa450edef68