pp-eval-expression broken

[Drew Adams]

`pp-eval-expression' was apparently changed to no longer evaluate its
argument. It evaluates only when called interactively. This breaks all
Lisp calls to `pp-eval-expression' (except those with
`call-interactively).

This seems to have been changed by RMS on 2006-10-18:

 "(pp-eval-expression): Use `X' to read value.
 Non-interactive arg is the value, not the expression."

PLEASE reverse this change. Why was it made?