Avoid non-ASCII decoding errors in Texinfo files

* doc/misc/tramp.texi:
* doc/lispref/strings.texi:
* doc/lispref/positions.texi:
* doc/lispref/help.texi:
* doc/lispref/functions.texi:
* doc/lispintro/emacs-lisp-intro.texi:
* doc/emacs/text.texi:
* doc/emacs/modes.texi:
* doc/emacs/mini.texi:
* doc/emacs/display.texi:
* doc/emacs/custom.texi:
* doc/emacs/basic.texi: Add 'coding' cookies -- these files use
Unicode characters and should be decoded as UTF-8.
* doc/lispref/frames.texi (Size Parameters): Don't use a non-ASCII
apostrophe unnecessarily.

doc/emacs/basic.texi

@@ -1,3 +1,4 @@
+@c -*- coding: utf-8 -*-
 @c This is part of the Emacs manual.
 @c Copyright (C) 1985-1987, 1993-1995, 1997, 2000-2015 Free Software
 @c Foundation, Inc.

doc/emacs/custom.texi

@@ -1,3 +1,4 @@
+@c -*- coding: utf-8 -*-
 @c This is part of the Emacs manual.
 @c Copyright (C) 1985-1987, 1993-1995, 1997, 2000-2015 Free Software
 @c Foundation, Inc.

doc/emacs/display.texi

@@ -1,3 +1,4 @@
+@c -*- coding: utf-8 -*-
 @c This is part of the Emacs manual.
 @c Copyright (C) 1985-1987, 1993-1995, 1997, 2000-2015 Free Software
 @c Foundation, Inc.

doc/emacs/mini.texi

@@ -1,3 +1,4 @@
+@c -*- coding: utf-8 -*-
 @c This is part of the Emacs manual.
 @c Copyright (C) 1985-1987, 1993-1995, 1997, 2000-2015 Free Software
 @c Foundation, Inc.

doc/emacs/modes.texi

@@ -1,3 +1,4 @@
+@c -*- coding: utf-8 -*-
 @c This is part of the Emacs manual.
 @c Copyright (C) 1985-1987, 1993-1995, 1997, 2000-2015 Free Software
 @c Foundation, Inc.

doc/emacs/text.texi

@@ -1,3 +1,4 @@
+@c -*- coding: utf-8 -*-
 @c This is part of the Emacs manual.
 @c Copyright (C) 1985-1987, 1993-1995, 1997, 2000-2015 Free Software
 @c Foundation, Inc.

doc/lispintro/emacs-lisp-intro.texi

@@ -1,4 +1,4 @@
-\input texinfo                                      @c -*-texinfo-*-
+\input texinfo                       @c -*- mode: texinfo; coding: utf-8 -*-
 @comment %**start of header
 @setfilename ../../info/eintr.info
 @c setfilename emacs-lisp-intro.info

doc/lispref/frames.texi

@@ -1283,7 +1283,7 @@ user-position}) does for the position parameters @code{top} and
 @cindex maximized frames
 @vindex fullscreen, a frame parameter
 @item fullscreen
-This parameter specifies whether to maximize the frame’s width, height
+This parameter specifies whether to maximize the frame's width, height
 or both.  Its value can be @code{fullwidth}, @code{fullheight},
 @code{fullboth}, or @code{maximized}.  A @dfn{fullwidth} frame is as
 wide as possible, a @dfn{fullheight} frame is as tall as possible, and

doc/lispref/functions.texi

@@ -1,4 +1,4 @@
-@c -*-texinfo-*-
+@c -*- mode: texinfo; coding: utf-8 -*-
 @c This is part of the GNU Emacs Lisp Reference Manual.
 @c Copyright (C) 1990-1995, 1998-1999, 2001-2015 Free Software
 @c Foundation, Inc.

doc/lispref/help.texi

@@ -1,4 +1,4 @@
-@c -*-texinfo-*-
+@c -*- mode: texinfo; coding: utf-8 -*-
 @c This is part of the GNU Emacs Lisp Reference Manual.
 @c Copyright (C) 1990-1995, 1998-1999, 2001-2015 Free Software
 @c Foundation, Inc.

doc/lispref/positions.texi

@@ -1,4 +1,4 @@
-@c -*-texinfo-*-
+@c -*- mode: texinfo; coding: utf-8 -*-
 @c This is part of the GNU Emacs Lisp Reference Manual.
 @c Copyright (C) 1990-1995, 1998-2015 Free Software Foundation, Inc.
 @c See the file elisp.texi for copying conditions.

doc/lispref/strings.texi

@@ -1,4 +1,4 @@
-@c -*-texinfo-*-
+@c -*- mode: texinfo; coding: utf-8 -*-
 @c This is part of the GNU Emacs Lisp Reference Manual.
 @c Copyright (C) 1990-1995, 1998-1999, 2001-2015 Free Software
 @c Foundation, Inc.

doc/lispref/tips.texi

@@ -1,4 +1,4 @@
-@c -*-texinfo-*-
+@c -*- mode: texinfo; coding: utf-8 -*-
 @c This is part of the GNU Emacs Lisp Reference Manual.
 @c Copyright (C) 1990-1993, 1995, 1998-1999, 2001-2015 Free Software
 @c Foundation, Inc.

doc/misc/tramp.texi

@@ -1,4 +1,4 @@
-\input texinfo   @c -*-texinfo-*-
+\input texinfo   @c -*- mode: texinfo; coding: utf-8 -*-
 @setfilename ../../info/tramp.info
 @c %**start of header
 @settitle TRAMP User Manual