bug#11612: 24.1; Defaults create warning on startup

[Drew Adams]

> Could the warning message "Setting HOME to C:\ by default is
> deprecated" also include "Move .emacs out from C:\"

There is nothing wrong with having .emacs in c:\.

IIUC, this change is about Emacs not looking in c:\ _by default_.  It is not
about discouraging or forbidding anyone from setting HOME to c:\.