crypto, crypto/ecies, crypto/secp256k1: libsecp256k1 scalar mult

crypto/crypto.go

crypto/crypto_test.go

crypto/ecies/asn1.go

crypto/ecies/ecies.go

crypto/ecies/ecies_test.go

crypto/ecies/params.go

crypto/key.go

crypto/secp256k1/curve.go

crypto/secp256k1/curve_test.go

crypto/secp256k1/pubkey_scalar_mul.h

crypto/secp256k1/secp256.go

crypto/secp256k1/secp256_test.go

p2p/discover/node.go

p2p/rlpx.go

p2p/rlpx_test.go

whisper/message_test.go