vim: Import v8.2.5141

* 8.2.5141: using "volatile int" in a signal handler might be wrong
* 8.2.5140: seachpair timeout test is flaky
* 8.2.5139: TIME_WITH_SYS_TIME is no longer supported by autoconf
* 8.2.5138: various small issues
* 8.2.5137: cannot build without the +channel feature
* Update runtime files

Author: chrisbra

gitlog.txt

@@ -1 +1 @@
-* [8.2.5136](https://github.com/vim/vim/commit/e366ed4f2c6fa8cb663f1b9599b39d57ddbd8a2a): debugger test fails when run with valgrind\n* [8.2.5135](https://github.com/vim/vim/commit/0f0d3a7fb6473760b6f6679e3c8a81376220c869): running configure gives warnings for main() return type\n* [8.2.5134](https://github.com/vim/vim/commit/3efd65c55710cbd2db7569096554bc92f4a66a43): function has confusing name\n* [8.2.5133](https://github.com/vim/vim/commit/1f68d992cd2fd7f484fbdc14eb8a9feefe59bec8): MacOS: build fails\n* [8.2.5132](https://github.com/vim/vim/commit/c829faa8211df52997c0b9ee49cdea0c8786b177): :mkview test doesn't test much\n* [8.2.5131](https://github.com/vim/vim/commit/e530395c2cd261d598094dc9ea785e90a753c5f1): timeout implementation is not optimal\n* [8.2.5130](https://github.com/vim/vim/commit/c5382b667ac4b69ddff5b5bc562386843bc9c07b): edit test for mode message fails when using valgrind\n* [8.2.5129](https://github.com/vim/vim/commit/1f30caff8b63beda75a5dcd15ffe3e9e818ed483): timeout handling is not optimal\n* [8.2.5128](https://github.com/vim/vim/commit/6f0cf62df97ee7c9d26b550adaf469be7fe1e09a): syntax disabled when using synID() in searchpair() skip expr\n* [8.2.5127](https://github.com/vim/vim/commit/cdc6a43559d5b880f81efceb849f40c20af1ada1): using assert\_true() does not show value on failure
+* [8.2.5141](https://github.com/vim/vim/commit/155f2d1451949d1124bfd6ba9c55be6bd74bab75): using "volatile int" in a signal handler might be wrong\n* [8.2.5140](https://github.com/vim/vim/commit/73171ba4344e17484699d11c65d57fb1f4de572a): seachpair timeout test is flaky\n* [8.2.5139](https://github.com/vim/vim/commit/300d71881957f8e60e48eda19002ce5e25fd9c06): TIME\_WITH\_SYS\_TIME is no longer supported by autoconf\n* [8.2.5138](https://github.com/vim/vim/commit/8088ae95bbed2085c5fb196850c4e4b8df55c989): various small issues\n* [8.2.5137](https://github.com/vim/vim/commit/509ce0383105d5b516ef2d489adb7c554d3c8f81): cannot build without the +channel feature\n* [Update runtime files](https://github.com/vim/vim/commit/d799daa660b8821943cbe1682f00da9e812dd48c)