\def\frlquote{\vbox{\offinterlineskip
  \hbox{${\scriptscriptstyle\langle\!\langle}$}\kern-0.1pt}\hskip
  -.6pt plus.3pt minus.2pt~}
\def\frrquote{~\hskip -.6pt plus.3pt minus.2pt\vbox{\offinterlineskip
  \hbox{$\scriptscriptstyle\rangle\!\rangle$}\kern-0.1pt}}