Mul mle by scalar #2921

Job	Run time
List directories for parallelizing tests	5s
Check no_std	28s
Check (stable)	14s
Check (nightly)	1m 9s
Check Style	6s
Check Documentation	1m 1s
Test (stable)	9m 24s
Test (cp6_782/)	7s
Test (nightly)	17m 57s
Test (mnt4_753/)	13m 28s
Test assembly	8m 36s
Test (mnt6_753/)	14s
Test (./ed25519)	57s
Test (./mnt6_298)	5m 31s
Test (./grumpkin)	1m 8s
Test (./ed_on_cp6_782)	1m 24s
Test (./ed_on_mnt4_753)	3m 51s
Test (./ed_on_bw6_761)	49s
Test (./bls12_381)	3m 21s
Test (./ed_on_bls12_381_bandersnatch)	1m 6s
Test (./ed_on_mnt4_298)	1m 9s
Test (./secq256k1)	58s
Test (./bn254)	2m 21s
Test (./mnt4_298)	3m 53s
Test (./secp256r1)	58s
Test (./vesta)	1m 8s
Test (./ed_on_bn254)	1m 2s
Test (./bw6_761)	3m 58s
Test (./curve25519)	1m 9s
Test (./pallas)	1m 6s
Test (./ed_on_bls12_377)	1m 9s
Test (./secp384r1)	1m 19s
Test (./secp256k1)	1m 1s
Test (./ed_on_bls12_381)	1m 13s
Test (./bls12_377)	4m 20s
Test (./bw6_767)	3m 51s
	1h 41m 31s

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