vim: Import v8.1.2019

* 8.1.2019: 'cursorline' always highlights the whole line
* 8.1.2018: using freed memory when out of memory and displaying message
* 8.1.2017: cannot execute commands after closing the cmdline window

gitlog.txt

@@ -1 +1 @@
-* [8.1.2016](https://github.com/vim/vim/releases/tag/v8.1.2016): terminal altscreen test now fails on MS-Windows\n* [8.1.2015](https://github.com/vim/vim/releases/tag/v8.1.2015): terminal altscreen test still fails sometimes\n* [8.1.2014](https://github.com/vim/vim/releases/tag/v8.1.2014): terminal altscreen test fails sometimes\n* [8.1.2013](https://github.com/vim/vim/releases/tag/v8.1.2013): more functions can be used as methods\n* [8.1.2012](https://github.com/vim/vim/releases/tag/v8.1.2012): more functions can be used as methods\n* [8.1.2011](https://github.com/vim/vim/releases/tag/v8.1.2011): more functions can be used as methods\n* [8.1.2010](https://github.com/vim/vim/releases/tag/v8.1.2010): new file uses old style comments\n* [8.1.2009](https://github.com/vim/vim/releases/tag/v8.1.2009): cursorline highlighting not updated in popup window\n* [8.1.2008](https://github.com/vim/vim/releases/tag/v8.1.2008): error for invalid range when using listener and undo\n* [8.1.2007](https://github.com/vim/vim/releases/tag/v8.1.2007): no test for what 8.1.1926 fixes
+* [8.1.2019](https://github.com/vim/vim/releases/tag/v8.1.2019): 'cursorline' always highlights the whole line\n* [8.1.2018](https://github.com/vim/vim/releases/tag/v8.1.2018): using freed memory when out of memory and displaying message\n* [8.1.2017](https://github.com/vim/vim/releases/tag/v8.1.2017): cannot execute commands after closing the cmdline window