add precompile #636

Job	Run time
integration_tests (unmarked)	12m 0s
testground-test	31s
integration_tests (ibc)	14m 13s
integration_tests (ibc_rly_evm)	12m 8s
integration_tests (ibc_rly_gas)	15m 59s
integration_tests (ibc_timeout)	9m 20s
integration_tests (ibc_update_client)	10m 48s
integration_tests (ica)	17m 52s
integration_tests (gov)	7m 49s
integration_tests (upgrade)	14m 54s
integration_tests (slow)	13m 21s
integration_tests (gas)	8m 15s
upload-cache	0s
	2h 17m 10s

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