Add boolean array support to GetUnpackedField. #603

Job	Run time
build_windows_x86 / build	17m 58s
build_windows_x64 / build	18m 20s
build_linux_rt / NILRT Cross Compile with GCC 6.3.0	26m 46s
build_linux / build	8m 36s
build_release_arifacts / Download and Build artifacts	24m 1s
	1h 35m 41s

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