stumpwm treats bastard items as a queue, rather than a stack.

It's annoying when something is pushed just as I'm popping. There
was a 'guard' variable to prevent that, but fell out of use at
some point and became disused. It's gone now.
w3m hack: further clean up Twitter's "dicover" page.
Emacs handles multiple frames a more intuitively.

Normally, my menu key is bound to switch between windows unless
there is only one window, in which case it activates iswitchb.

Now it switches between frames, when frames exist, but still
prefers switching windows.