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/src/alloc.c b/src/alloc.c
index 5d8003ffb5c..f256ff71b07 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -4531,9 +4531,9 @@ mark_maybe_object (Lisp_Object obj)
 
   void *po = XPNTR (obj);
 
-  /* If the pointer is in the dumped image and the dump has a record
+  /* If the pointer is in the dump image and the dump has a record
      of the object starting at the place where the pointer points, we
-     definitely have an object.  If the pointer is in the dumped image
+     definitely have an object.  If the pointer is in the dump image
      and the dump has no idea what the pointer is pointing at, we
      definitely _don't_ have an object.  */
   if (pdumper_object_p (po))