Bump libtapi 1100.0.11, Clang 10.0.1, native cctools 973.0.1, ld64 609
LLVM 8 has inherent nondeterminism in the compiler, fixed in LLVM 9+.
This is a partial backport of [[https://github.com/bitcoin/bitcoin/pull/19817 | core#19817]]
https://github.com/bitcoin/bitcoin/pull/19817/commits/9b193cd2a3ca20917611fbed56dfbcd8a39aeab8
https://github.com/bitcoin/bitcoin/pull/19817/commits/f48f187cce7fa43646fb0d796c244e1515e763ec
https://github.com/bitcoin/bitcoin/pull/19817/commits/9ed2f19d385aa95f65807999bba2e18417b143dc
Depends on D13775
Note that we never backported the qpainter non-determinism patch ([[https://github.com/bitcoin/bitcoin/pull/20447 | core#20447]])