vim: Import v8.2.5166

* 8.2.5166: test for DiffUpdated fails
* 8.2.5165: import test fails because 'diffexpr' isn't reset
* 8.2.5164: invalid memory access after diff buffer manipulations
* 8.2.5163: crash when deleting buffers in diff mode
* 8.2.5162: reading before the start of the line with BS in Replace mode
* Update runtime files
* 8.2.5161: might still access invalid memory

Author: chrisbra

gitlog.txt

@@ -1 +1 @@
-* [8.2.5160](https://github.com/vim/vim/commit/e178af5a586ea023622d460779fdcabbbfac0908): accessing invalid memory after changing terminal size\n* [Update runtime files](https://github.com/vim/vim/commit/e1dc76fbf333243ecfdfc3c0a81ea9984913b4f5)\n* [8.2.5159](https://github.com/vim/vim/commit/7bb6d56cfc8ac82dea323f6799a773d7fa3286a8): fix for CTRL-key combinations causes problems\n* [8.2.5158](https://github.com/vim/vim/commit/61e3784819d3776ec6fb40d97a12a1bb659e8143): TSTP and INT signal tests are not run with valgrind
+* [8.2.5166](https://github.com/vim/vim/commit/f65cc665fa751bad3ffe75f58ce1251d6695949f): test for DiffUpdated fails\n* [8.2.5165](https://github.com/vim/vim/commit/507618702e0b04d37028a5bdf7d0d1b09555e19a): import test fails because 'diffexpr' isn't reset\n* [8.2.5164](https://github.com/vim/vim/commit/c101abff4c6756db4f5e740fde289decb9452efa): invalid memory access after diff buffer manipulations\n* [8.2.5163](https://github.com/vim/vim/commit/cd38bb4d83c942c4bad596835c6766cbf32e5195): crash when deleting buffers in diff mode\n* [8.2.5162](https://github.com/vim/vim/commit/0971c7a4e537ea120a6bb2195960be8d0815e97b): reading before the start of the line with BS in Replace mode\n* [Update runtime files](https://github.com/vim/vim/commit/8a3b805c6c9cae341d560df9c3567ebbe42a7404)\n* [8.2.5161](https://github.com/vim/vim/commit/0fbc9260a75dfc4d86f20e7c0eb76878f513a212): might still access invalid memory