; Update lisp/ldefs-boot.el

* etc/HISTORY: Add Emacs 26.3 release release date.

* etc/HISTORY: Add Emacs 26.3 release release date.

; * lisp/ldefs-boot.el: Update.

Bump Emacs version to 26.2

* README:
* configure.ac:
* msdos/sed2v2.inp:
* nt/README.W32: Bump Emacs version to 26.2.

Emacs 26.1.92 pretest release

Emacs 26.1.91 pretest

Emacs 26.1.90 pretest

Emacs 26.1 release

Emacs 26.1 RC1