bp/XmlProcessor: move CanRewriteUri() call to PostponeUriRewrite()
bp/XmlProcessor: move CanRewriteUri() call to PostponeUriRewrite()

CM4all/beng-proxy,CM4all/beng-proxy,CM4all/beng-proxy,CM4all/beng-proxy,CM4all/beng-proxy,CM4all/beng-proxy