Stop keeping multiple doc copies for items defined multiple times

It was always a nuisance to keep all the copies in sync.
* src/doc.c (Fsnarf_documentation): Don't skip entire files.
Instead, skip individual doc strings starting with "SKIP".
* doc/lispref/internals.texi (Writing Emacs Primitives):
Mention this skipping.
* lisp/term/ns-win.el, lisp/term/pc-win.el, src/dosfns.c:
* src/frame.c, src/nsfns.m, src/nsmenu.m, src/nsterm.m:
* src/w16select.c, src/w32fns.c, src/w32menu.c, src/w32select.c:
* src/w32term.c, src/xmenu.c: Remove duplicated doc strings.
* src/xfns.c: Merge in information from doc string duplicates.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/frame.c b/src/frame.c
index 9eac242ea3f..fdde3d99a93 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -317,7 +317,7 @@ predicates which report frame's specific UI-related capabilities.  */)
 /* Placeholder used by temacs -nw before window.el is loaded.  */
 DEFUN ("frame-windows-min-size", Fframe_windows_min_size,
        Sframe_windows_min_size, 4, 4, 0,
-       doc: /* */
+       doc: /* SKIP: real doc in window.el.  */
        attributes: const)
      (Lisp_Object frame, Lisp_Object horizontal,
       Lisp_Object ignore, Lisp_Object pixelwise)