add arm64- prefix detection #376

Job	Run time
perl (1, 5.39)	3m 49s
perl (1, ALIEN_BUILD_LIVE_TEST=1, 5.38-alpine3.16)	4m 57s
perl (1, ALIEN_BUILD_LIVE_TEST=1, 5.38-bionic)	4m 10s
perl (1, ALIEN_BUILD_LIVE_TEST=1, 5.38-fedora36)	4m 39s
perl (0, ALIEN_BUILD_LIVE_TEST=0, 5.38-bullseye)	3m 2s
perl (1, ALIEN_BUILD_LIVE_TEST=1, 5.38-bullseye)	3m 59s
perl (1, ALIEN_DOWNLOAD_RULE=warn, 5.38)	4m 1s
perl (1, ALIEN_DOWNLOAD_RULE=digest, 5.38)	3m 53s
perl (1, ALIEN_DOWNLOAD_RULE=encrypt, 5.38)	3m 51s
perl (1, ALIEN_DOWNLOAD_RULE=digest_or_encrypt, 5.38)	4m 11s
perl (1, ALIEN_DOWNLOAD_RULE=digest_and_encrypt, 5.38)	4m 28s
perl (1, 5.38)	3m 52s
perl (1, 5.36)	1m 44s
perl (1, 5.34)	1m 39s
perl (1, 5.32)	1m 37s
perl (1, 5.30)	1m 41s
perl (1, 5.28)	1m 34s
perl (1, 5.26)	1m 39s
perl (1, 5.24)	1m 33s
perl (1, 5.22)	1m 40s
perl (1, 5.20)	1m 31s
perl (0, 5.18)	1m 32s
perl (0, 5.16)	1m 21s
perl (0, 5.14)	1m 20s
perl (0, 5.12)	1m 22s
perl (0, 5.10.1)	1m 0s
perl (0, 5.10.0)	1m 3s
perl (0, 5.8.8)	1m 4s
perl (0, 5.8.4)	58s
	1h 13m 10s

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