Bump Emacs version to 26.1.91

* README:
* configure.ac:
* msdos/sed2v2.inp:
* nt/README.W32: Bump Emacs version to 26.1.91.

README

@@ -2,7 +2,7 @@ Copyright (C) 2001-2019 Free Software Foundation, Inc.
 See the end of the file for license conditions.
 
 
-This directory tree holds version 26.1.90 of GNU Emacs, the extensible,
+This directory tree holds version 26.1.91 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 <https://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, 26.1.90, bug-gnu-emacs@gnu.org)
+AC_INIT(GNU Emacs, 26.1.91, 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.

msdos/sed2v2.inp

@@ -66,7 +66,7 @@
 /^#undef PACKAGE_NAME/s/^.*$/#define PACKAGE_NAME ""/
 /^#undef PACKAGE_STRING/s/^.*$/#define PACKAGE_STRING ""/
 /^#undef PACKAGE_TARNAME/s/^.*$/#define PACKAGE_TARNAME ""/
-/^#undef PACKAGE_VERSION/s/^.*$/#define PACKAGE_VERSION "26.1.90"/
+/^#undef PACKAGE_VERSION/s/^.*$/#define PACKAGE_VERSION "26.1.91"/
 /^#undef SYSTEM_TYPE/s/^.*$/#define SYSTEM_TYPE "ms-dos"/
 /^#undef HAVE_DECL_GETENV/s/^.*$/#define HAVE_DECL_GETENV 1/
 /^#undef SYS_SIGLIST_DECLARED/s/^.*$/#define SYS_SIGLIST_DECLARED 1/

nt/README.W32

 Copyright (C) 2001-2019 Free Software Foundation, Inc.
 See the end of the file for license conditions.
 
-		Emacs version 26.1.90 for MS-Windows
+		Emacs version 26.1.91 for MS-Windows
 
   This README file describes how to set up and run a precompiled
   distribution of the latest version of GNU Emacs for MS-Windows.  You