Making contracts `memory-safe` #369

Job	Run time
verify (verifyOwners.sh)	21m 44s
verify (verifySafe.sh)	7m 58s
verify (verifyModules.sh)	1h 44m 36s
verify (verifyNativeTokenRefund.sh)	3m 14s
verify (verifySignatures.sh)	3m 54s
	2h 21m 26s

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