[ms-gsl] Update to v2.1.0, the "end of 2019 snapshot"

[Farwaykorse]

• What does your PR fix?
  • [ms-gsl]
    • This updates the GSL to the versioned snapshot created at the end of 2019.
      Changes for v2.1.0.
      Didn't update to the current HEAD, because not all CI builds are succeeding on Linux.
      (The testsuite of the GSL is being migrating from Catch to GTest.)
    • Removing the deprecated include(vcpkg_common_functions).
  • [coroutine]
    Updated with a fix (add missing #include <cassert> luncliff/coroutine#45) required to build with recent versions of the GSL.
• Which triplets are supported/not supported? Have you updated the CI baseline?
  No changes.

[PhoebeHui]

@Farwaykorse, thanks for the PR!

The CI failed with following regression, is this expected? could you take a look?
[error] REGRESSION: coroutine:x64-windows
[error] REGRESSION: coroutine:x64-windows-static
[error] REGRESSION: coroutine:arm64-windows

[Farwaykorse]

@PhoebeHui Thanks for checking. This is indeed unexpected.
I'll have to take a look at the problem with luncliff/coroutine.

[Farwaykorse]

Added the fix.
For a working history I changed the commit order for the fix (and update of coroutine) to come before the update of ms-gsl.
(Even though GitHub does still render them by their first creation date in this overview.)

[luncliff]

@PhoebeHui @Farwaykorse Thanks for letting me know the issue :)
For the coroutine I will take a look and submit a PR for it soon.

[Farwaykorse]

@luncliff coroutine should be fine with commit 0ebb574

A separate PR would normally be nice, but GitHub has no method to mark PR's as dependent on an other PR.

[ras0219-msft]

/azp run

[ras0219-msft]

All the CI errors look to be unrelated to this PR; no changes needed

[PhoebeHui]

/azp run

[PhoebeHui]

The CI failed with '##[error] REGRESSION: qt5-tools:x86-windows' it seems not related to this changes:

jom: C:\vsts\_work\3\s\buildtrees\qt5-tools\x86-windows-dbg\src\linguist\lupdate\Makefile.Debug [..\..\..\bin\lupdate.exe] Error 1104
jom: C:\vsts\_work\3\s\buildtrees\qt5-tools\x86-windows-dbg\src\linguist\lupdate\Makefile [debug] Error 2
jom: C:\vsts\_work\3\s\buildtrees\qt5-tools\x86-windows-dbg\src\linguist\Makefile [sub-lupdate-make_first] Error 2
C:\vsts\_work\3\s\buildtrees\qt5-tools\src\5.12.5-28cc1badc0\src\linguist\linguist\main.cpp(0): Note: No relevant classes found. No output generated.
jom: C:\vsts\_work\3\s\buildtrees\qt5-tools\x86-windows-dbg\src\Makefile [sub-linguist-make_first] Error 2
jom: C:\vsts\_work\3\s\buildtrees\qt5-tools\x86-windows-dbg\Makefile [sub-src-make_first] Error 2

[JackBoosY]

Needs to rerun pipeline test after #9752 merged.

[PhoebeHui]

The CI test pass, it seems no issue block this PR.

[vicroms]

Thanks for the PR!