Cherry-pick commits lost in rebranch#2417

Merged

adrian-prantl merged 3 commits intoswiftlang:swift/mainfrom

adrian-prantl:main-cherry-picks

Feb 3, 2021

Commits on Feb 2, 2021

Be more flexible when handling bridged Swift/ObjC CoreFoundation types.
adrian-prantl
committed
Invoke SwiftASTContext::LogConfiguration() on all error paths (NFC outside of types log)
adrian-prantl
committed
Add missing nullptr checks after SwiftLanguageRuntimeImpl::GetTypeInfo()
adrian-prantl
committed