vimrc_example.vim is not relevant to Nvim. Anything worth having in
there should be made an actual default.

.gitignore:
  - remove *.orig ... super annoying

Problem:    Non-GUI specific settings in the gvimrc_example file.
Solution:   Move some settings to the vimrc_example file.  Remove setting
            'hlsearch' again. (suggested by Hirohito Higashi)

https://github.com/vim/vim/commit/54f1b7abf8c48b1dd997202258d1d0673ed4bd29

Original commit: https://github.com/vim/vim/commit/5a5f459

commit 5a5f45917dbf542cb00617fa5ef70a14898495dd
Author: Bram Moolenaar <Bram@vim.org>
Date:   Mon Apr 13 12:43:06 2015 +0200

    Updated runtime files.

(1) Merged manually vimrc_example.vim
(2) Left out README.txt, doc/tags, doc/todo.txt, tutor/tutor.de,
tutor.de.utf-8, ga.po

Because of recent work on defaults (see
https://github.com/neovim/neovim/issues/2676)

Problem:    Language mapping also applies to mapped characters.
Solution:   Add the 'langnoremap' option, when on 'langmap' does not apply to
            mapped characters. (Christian Brabandt)

https://github.com/vim/vim/releases/tag/v7-4-502

Also remove some MS-DOS references on lines already being touched.

Based on this commit:
https://github.com/justinmk/neovim/commit/e4db01ca8707c34dc808d7f6378aa3aba9002a2d

Notes regarding the removal of specific items:

  - Aztec C: only on the Amiga.
  - mch_check_win(): doesn't exist anymore.
  - Comment in ex_cmds.c: It seems the context for this comment was
    removed, but the comment was inadvertantly left alone.