Build release artifacts

Add Savannah for 3.16 and 3.17 #61

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Run time

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Job	Run time
verify-input	13s
build-docs	17m 14s
build-android (x86_64)	18m 44s
build-android (aarch64)	5m 32s
build-source	1m 17s
test-source	27m 50s
	1h 10m 50s