Mul mle by scalar (#845) #2927

Job	Run time
Check Documentation	55s
Check Style	10s
Check (stable)	11s
Check no_std	46s
Check (nightly)	1m 15s
List directories for parallelizing tests	2s
Test (stable)	9m 3s
Test (nightly)	19m 1s
Test assembly	9m 9s
Test (cp6_782/)	7s
Test (mnt4_753/)	12m 11s
Test (mnt6_753/)	11s
Test (./ed25519)	55s
Test (./mnt6_298)	5m 26s
Test (./grumpkin)	1m 7s
Test (./ed_on_cp6_782)	1m 16s
Test (./ed_on_mnt4_753)	3m 47s
Test (./ed_on_bw6_761)	38s
Test (./bls12_381)	3m 16s
Test (./ed_on_bls12_381_bandersnatch)	1m 3s
Test (./ed_on_mnt4_298)	1m 5s
Test (./secq256k1)	55s
Test (./bn254)	2m 19s
Test (./mnt4_298)	3m 59s
Test (./secp256r1)	56s
Test (./vesta)	1m 11s
Test (./ed_on_bn254)	1m 1s
Test (./bw6_761)	3m 53s
Test (./curve25519)	1m 3s
Test (./pallas)	1m 7s
Test (./ed_on_bls12_377)	1m 7s
Test (./secp384r1)	1m 16s
Test (./secp256k1)	1m 7s
Test (./ed_on_bls12_381)	1m 17s
Test (./bls12_377)	4m 15s
Test (./bw6_767)	4m 11s
	1h 41m 11s

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