tree b650172231f7b20cb2017af4ce62ce03d04e8f00
parent 6592eafa8f26e0cb705fdb84f355ea317bfe94cf
author Louis Dionne <ldionne.2@gmail.com> 1653577965 -0400
committer Copybara-Service <copybara-worker@google.com> 1653672147 -0700

[runtimes] Officially deprecate the legacy testing configuration system

Add a warning and tweak the release note to explain that the deprecation
targets libc++, libc++abi and libuwnind as well.

Also, as a fly-by, ensure that our CI runs the legacy testing configuration
for libc++, libc++abi and libunwind. This doesn't matter too much since
it's deprecated, but we might as well test it properly.

Differential Revision: https://reviews.llvm.org/D126478

GitOrigin-RevId: 719bf2d9d9fdb8792b15d93364c9c6b2ddd68a36