no binding to suspend a compilation

[Dan Jacobson]

When we hit C-h m in the *compilation* buffer, we don't get the tidy
table of keystrokes, just this English blurb about them.

Also there is no keystroke to suspend the compilation. To send it a
C-z, so to say.

I mean I had to go dig up its PID and send it a
$ kill -STOP

And of course remember also a binding to restart it later.

kill-compilation is not always the appropriate choice for stopping things.