Bump Emacs version to 25.1 for the first RC

* README:
* configure.ac:
* lisp/ldefs-boot.el:
* msdos/sed2v2.inp: Bump Emacs version to 25.1.

README

@@ -2,7 +2,7 @@ Copyright (C) 2001-2016 Free Software Foundation, Inc.
 See the end of the file for license conditions.
 
 
-This directory tree holds version 25.0.95 of GNU Emacs, the extensible,
+This directory tree holds version 25.1 of GNU Emacs, the extensible,
 customizable, self-documenting real-time display editor.
 
 The file INSTALL in this directory says how to build and install GNU

configure.ac

@@ -23,7 +23,7 @@ dnl  along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
 
 AC_PREREQ(2.65)
 dnl Note this is parsed by (at least) make-dist and lisp/cedet/ede/emacs.el.
-AC_INIT(GNU Emacs, 25.0.95, bug-gnu-emacs@gnu.org)
+AC_INIT(GNU Emacs, 25.1, bug-gnu-emacs@gnu.org)
 
 dnl Set emacs_config_options to the options of 'configure', quoted for the shell,
 dnl and then quoted again for a C string.  Separate options with spaces.