Merging from master #375

Job	Run time
Build framework (macos-release-availability, -sdk macosx -configuration Release WARNING_CFLAGS=...	13m 25s
Build framework (ios-release, -sdk iphoneos -configuration Release WARNING_CFLAGS='${inherited} -...	8m 14s
Build framework (ios-debug, -sdk iphoneos -configuration Debug WARNING_CFLAGS='${inherited} -We...	7m 22s
Build framework (tvos-debug, -sdk appletvos -configuration Debug WARNING_CFLAGS='${inherited} -W...	6m 59s
Build framework (watchos-debug, -sdk watchos -configuration Debug WARNING_CFLAGS='${inherited}...	9m 49s
Run framework tests (asan, -enableAddressSanitizer YES -enableUndefinedBehaviorSanitizer YES)	18m 11s
Build TV Casting Bridge example	9m 40s
Run framework tests (asan-global-storage, -enableAddressSanitizer YES -enableUndefinedBehaviorSan...	21m 25s
Run framework tests (tsan, -enableThreadSanitizer YES)	20m 21s
	1h 55m 26s

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