* src/emacs.c (usage_message): Possessive apostrophe tweak.

Likewise in some comments.

src/ChangeLog

@@ -1,3 +1,7 @@
+2013-09-11  Glenn Morris  <rgm@gnu.org>
+
+	* emacs.c (usage_message): Possessive apostrophe tweak.
+
 2013-09-11  Dmitry Antipov  <dmantipov@yandex.ru>
 
 	* nsterm.m (syms_of_nsterm): Use Qns.

src/emacs.c

@@ -1,7 +1,7 @@
 /* Fully extensible Emacs, running on Unix, intended for GNU.
 
-Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2013 Free Software
-Foundation, Inc.
+Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2013
+  Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
@@ -310,7 +310,7 @@ example, -batch as well as --batch.  You can use any unambiguous\n\
 abbreviation for a --option.\n\
 \n\
 Various environment variables and window system resources also affect\n\
-Emacs' operation.  See the main documentation.\n\
+the operation of Emacs.  See the main documentation.\n\
 \n\
 Report bugs to bug-gnu-emacs@gnu.org.  First, please see the Bugs\n\
 section of the Emacs manual or the file BUGS.\n"

src/w32proc.c

@@ -1144,7 +1144,7 @@ create_child (char *exe, char *cmdline, char *env, int is_gui_app,
   return FALSE;
 }
 
-/* create_child doesn't know what emacs' file handle will be for waiting
+/* create_child doesn't know what emacs's file handle will be for waiting
    on output from the child, so we need to make this additional call
    to register the handle with the process
    This way the select emulator knows how to match file handles with

src/xfns.c

@@ -1031,7 +1031,7 @@ x_set_border_pixel (struct frame *f, int pix)
    Note: this is done in two routines because of the way X10 works.
 
    Note: under X11, this is normally the province of the window manager,
-   and so emacs' border colors may be overridden.  */
+   and so emacs's border colors may be overridden.  */
 
 static void
 x_set_border_color (struct frame *f, Lisp_Object arg, Lisp_Object oldval)