bug#11333: Whitespace mode says it's enabled, when it's really not

[Kelly Dean]

I'm using Emacs on X on Debian 6 Stable. emacs-version says GNU Emacs 23.2.1 
(i486-pc-linux-gnu, GTK+ Version 2.20.0) of 2010-12-11 on raven, modified by 
Debian.
Steps to reproduce the bug:
Put in your init file just (global-whitespace-mode 1). Start Emacs.
Switch to the scratch buffer. The modeline says "Lisp Interaction WS". Type 
some whitespace which whitespace mode would highlight. Notice that it isn't 
highlighted. Do M-x global-whitespace-mode twice, to toggle it off and back on. 
Notice that the whitespace is now highlighted.
Make a new buffer. In the modeline it says "Fundamental WS". Type some 
whitespace. Same problem.
I'm told that in fundamental mode, Emacs intentionally doesn't enable global 
minor modes, because doing so would break things, which explains why it's 
initially disabled in your new buffer (though it doesn't explain why it's 
disabled in the scratch buffer, which isn't in fundamental mode). But if 
whitespace mode isn't enabled for a particular buffer, then putting "WS" in the 
modeline for that buffer is deceptive. It shouldn't do it.