Apple Silicon macOS support

[randall]

Allows builds on Apple Silicon to complete and run

[ywkaras]

I am confused that there are changes to catch.hpp but no change to the version, how is that possible?

trafficserver/tests/include/catch.hpp

Line 2 in a884cc1

* Catch v2.11.0

[ywkaras]

I am confused that there are changes to catch.hpp but no change to the version, how is that possible?

trafficserver/tests/include/catch.hpp

Line 2 in a884cc1

* Catch v2.11.0

[randall]

I am confused that there are changes to catch.hpp but no change to the version, how is that possible?

trafficserver/tests/include/catch.hpp

Line 2 in a884cc1

* Catch v2.11.0

I manually back ported the apple-related changes from catch.

Upgrading catch to it's latest version is an effort of it's own: #7464

[bryancall]

@randall Can you have a better explanation of what is happening? We did a code review today and had questions.

[randall]

originally, I back ported some macOS specific changes from catch.hpp's head to get macOS on AS to build. With #7464 merged I no longer need that (and this PR has been fixed up to reflect that)

[zwoop]

Cherry-picked to v9.1.x branch.

[zwoop]

Cherry-picked to v9.0.x branch.

[zwoop]

I think we need to revert this for now, from all release branches.