vim: Import v8.2.1775

* 8.2.1775: MS-Windows: adding a long quickfix list is slow
* 8.2.1774: GTK: hang when forced to exit
* 8.2.1773: crash when calling mapset() with a list as first argument
* 8.2.1772: cannot use CTRL-W <Down> to move out of a terminal window
* 8.2.1771: synIDattr() cannot get the value of ctermul

Author: chrisbra

gitlog.txt

@@ -1 +1 @@
-* [8.2.1770](https://github.com/vim/vim/commit/d569a9e74684cd17f9cea63e804281388728e513): invalid memory use when using SpellFileMissing autocmd\n* [8.2.1769](https://github.com/vim/vim/commit/4934ad0e448bfa03ba19c7c5b411c457a9910442): popup filter interferes with using :normal to move the cursor\n* [Update runtime files.](https://github.com/vim/vim/commit/d58a3bf7dac8d53faf42e13cc1152b110f12c404)\n* [8.2.1768](https://github.com/vim/vim/commit/b45cd36bd90f71e4a35b1ef1f75a3bedef6d8bac): cannot use the help menu from a terminal window
+* [8.2.1775](https://github.com/vim/vim/commit/8ec92c977976d9e9225183e36a80e6b0cdbf1f51): MS-Windows: adding a long quickfix list is slow\n* [8.2.1774](https://github.com/vim/vim/commit/32fbc4f247a31e35ade0939542e11aa033a2554f): GTK: hang when forced to exit\n* [8.2.1773](https://github.com/vim/vim/commit/1b9129809d8269acb8e7c79d8fc99c7976b4f76e): crash when calling mapset() with a list as first argument\n* [8.2.1772](https://github.com/vim/vim/commit/f43e7ac4eee22dbb26fc069ec9a3d1598ec8dfe9): cannot use CTRL-W \<Down> to move out of a terminal window\n* [8.2.1771](https://github.com/vim/vim/commit/391c36279415d0b8c5dba1ba11b668add04be963): synIDattr() cannot get the value of ctermul