vim: Import v8.0.1451

* 8.0.1451: difficult to set the python home directories properly
* 8.0.1450: GUI: endless loop when stopping cursor blinking
* 8.0.1449: slow redrawing with DirectX
* 8.0.1448: segfault with exception inside :rubyfile command
* 8.0.1447: still too many old style tests
* 8.0.1446: acessing freed memory after window command in auto command
* 8.0.1445: cannot act on edits in the command line
* 8.0.1444: missing -D_FILE_OFFSET_BITS=64 may cause problems
* 8.0.1443: compiler complains about uninitialized variable

gitlog.txt

@@ -1 +1 @@
-* [8.0.1442](https://github.com/vim/vim/releases/tag/v8.0.1442): using pointer before it is set\n* [8.0.1441](https://github.com/vim/vim/releases/tag/v8.0.1441): using ":undo 0" leaves undo in wrong state\n* [8.0.1440](https://github.com/vim/vim/releases/tag/v8.0.1440): terminal window: some vterm responses are delayed\n* [8.0.1439](https://github.com/vim/vim/releases/tag/v8.0.1439): if cscope fails a search Vim may hang
+* [8.0.1451](https://github.com/vim/vim/releases/tag/v8.0.1451): difficult to set the python home directories properly\n* [8.0.1450](https://github.com/vim/vim/releases/tag/v8.0.1450): GUI: endless loop when stopping cursor blinking\n* [8.0.1449](https://github.com/vim/vim/releases/tag/v8.0.1449): slow redrawing with DirectX\n* [8.0.1448](https://github.com/vim/vim/releases/tag/v8.0.1448): segfault with exception inside :rubyfile command\n* [8.0.1447](https://github.com/vim/vim/releases/tag/v8.0.1447): still too many old style tests\n* [8.0.1446](https://github.com/vim/vim/releases/tag/v8.0.1446): acessing freed memory after window command in auto command\n* [8.0.1445](https://github.com/vim/vim/releases/tag/v8.0.1445): cannot act on edits in the command line\n* [8.0.1444](https://github.com/vim/vim/releases/tag/v8.0.1444): missing -D_FILE_OFFSET_BITS=64 may cause problems\n* [8.0.1443](https://github.com/vim/vim/releases/tag/v8.0.1443): compiler complains about uninitialized variable