* byte-run.el (make-obsolete, make-obsolete-variable):

* byte-run.el (make-obsolete, make-obsolete-variable):
Add an optional WHEN argument and change the format of the
symbol-property information.
* emacs-lisp/bytecomp.el (byte-compile-log): Don't quote lambda.
(byte-compile-obsolete, byte-compile-variable-ref): Understand the
new obsolete-symbol-property format and print WHEN if it is provided.
(make-obsolete): Update the calls to use the third argument.