Merge llvm-project llvmorg-11.0.1-0-g43ff75f2c3f (aka 11.0.1 release)
There were no functional changes after 11.0.1 rc2, so only the version
strings changed.
MFC after: 4 weeks
X-MFC-With: r364284
(cherry picked from commit 39b7445e15cd114383bb0c2f4bbbe46e4b2bd752)