vim: Import v8.0.1489

* Update runtime files.
* 8.0.1489: there is no easy way to get the global directory
* 8.0.1488: emacs tags no longer work
* 8.0.1487: test 14 fails
* 8.0.1486: accessing invalid memory with "it"
* 8.0.1485: weird autocmd may cause arglist to be changed recursively
* 8.0.1484: reduntant conditions
* 8.0.1483: searchpair() might return an invalid value on timeout
* 8.0.1482: using feedkeys() does not work to test completion
* 8.0.1481: clearing a pointer takes two lines
* 8.0.1480: patch missing change
* 8.0.1479: insert mode completion state is confusing

gitlog.txt

@@ -1 +1 @@
-* [8.0.1478](https://github.com/vim/vim/releases/tag/v8.0.1478): unnecessary condition\n* [8.0.1477](https://github.com/vim/vim/releases/tag/v8.0.1477): redraw flicker when moving the mouse outside of terminal window\n* [8.0.1476](https://github.com/vim/vim/releases/tag/v8.0.1476): screen isn't always updated right away
+* Update runtime files.\n* [8.0.1489](https://github.com/vim/vim/releases/tag/v8.0.1489): there is no easy way to get the global directory\n* [8.0.1488](https://github.com/vim/vim/releases/tag/v8.0.1488): emacs tags no longer work\n* [8.0.1487](https://github.com/vim/vim/releases/tag/v8.0.1487): test 14 fails\n* [8.0.1486](https://github.com/vim/vim/releases/tag/v8.0.1486): accessing invalid memory with "it"\n* [8.0.1485](https://github.com/vim/vim/releases/tag/v8.0.1485): weird autocmd may cause arglist to be changed recursively\n* [8.0.1484](https://github.com/vim/vim/releases/tag/v8.0.1484): reduntant conditions\n* [8.0.1483](https://github.com/vim/vim/releases/tag/v8.0.1483): searchpair() might return an invalid value on timeout\n* [8.0.1482](https://github.com/vim/vim/releases/tag/v8.0.1482): using feedkeys() does not work to test completion\n* [8.0.1481](https://github.com/vim/vim/releases/tag/v8.0.1481): clearing a pointer takes two lines\n* [8.0.1480](https://github.com/vim/vim/releases/tag/v8.0.1480): patch missing change\n* [8.0.1479](https://github.com/vim/vim/releases/tag/v8.0.1479): insert mode completion state is confusing