Improve pdumper doc; say unexec is deprecated

Say that pdumping cannot redump unless -batch is used.  Say that
the traditional unexec dumping method is by default not available,
and is deprecated.  Don't call dump files "portable", as dump files
are not any more portable than the Emacs executables themselves.
Just call them "dump files".  Similar, prefer "portable dumper"
(since the dumper code is portable) to "portable dumping" (since
the dump file is not).  Be more systematic about calling them
"dump files" instead of "dumped images" or whatnot.

1 files changed, 2 insertions, 2 deletions

diff --git a/lisp/startup.el b/lisp/startup.el
index 7759ed5aed3..564428580b1 100644
--- a/lisp/startup.el
+++ b/lisp/startup.el
@@ -354,8 +354,8 @@ Setting `init-file-user' does not prevent Emacs from loading
   "File containing site-wide run-time initializations.
 This file is loaded at run-time before `~/.emacs'.  It contains inits
 that need to be in place for the entire site, but which, due to their
-higher incidence of change, don't make sense to load into Emacs's
-dumped image.  Thus, the run-time load order is: 1. file described in
+higher incidence of change, don't make sense to put into Emacs's
+dump file.  Thus, the run-time load order is: 1. file described in
 this variable, if non-nil; 2. `~/.emacs'; 3. `default.el'.
 
 Don't use the `site-start.el' file for things some users may not like.