contracts-bedrock: make a library call internal

So we don't have to handle library linking
in the state surgery

.changeset/poor-jobs-glow.md

+---
+'@eth-optimism/contracts-bedrock': patch
+---
+
+Make a library call internal

packages/contracts-bedrock/.gas-snapshot

@@ -128,8 +128,8 @@ OptimismMintableERC20_Test:test_mint() (gas: 65763)
 OptimismMintableERC20_Test:test_mintRevertsFromNotBridge() (gas: 13252)
 OptimismMintableERC20_Test:test_remoteToken() (gas: 9740)
 OptimismMintableTokenFactory_Test:test_bridge() (gas: 7663)
-OptimismMintableTokenFactory_Test:test_createStandardL2Token() (gas: 1112929)
-OptimismMintableTokenFactory_Test:test_createStandardL2TokenSameTwice() (gas: 2208763)
+OptimismMintableTokenFactory_Test:test_createStandardL2Token() (gas: 1109735)
+OptimismMintableTokenFactory_Test:test_createStandardL2TokenSameTwice() (gas: 2205567)
 OptimismMintableTokenFactory_Test:test_createStandardL2TokenShouldRevertIfRemoteIsZero() (gas: 9398)
 OptimismPortalUpgradeable_Test:test_cannotInitImpl() (gas: 10813)
 OptimismPortalUpgradeable_Test:test_cannotInitProxy() (gas: 15789)

packages/contracts-bedrock/contracts/test/RLP.t.sol

@@ -10,7 +10,7 @@ import { Bytes32AddressLib } from "@rari-capital/solmate/src/utils/Bytes32Addres
 library LibRLP {
     using Bytes32AddressLib for bytes32;
 
-    function computeAddress(address deployer, uint256 nonce) public pure returns (address) {
+    function computeAddress(address deployer, uint256 nonce) internal pure returns (address) {
         // The integer zero is treated as an empty byte string, and as a result it only has a length prefix, 0x80, computed via 0x80 + 0.
         // A one byte integer uses its own value as its length prefix, there is no additional "0x80 + length" prefix that comes before it.
         if (nonce == 0x00)             return keccak256(abi.encodePacked(bytes1(0xd6), bytes1(0x94), deployer, bytes1(0x80))).fromLast20Bytes();

state-surgery/hardhat/types.go

@@ -57,6 +57,10 @@ type Log struct {
 }
 
 // Artifact represents a hardhat compilation artifact
+// The Bytecode and DeployedBytecode are not guranteed
+// to be hexutil.Bytes when there are link references.
+// In the future, custom json marshalling can be used
+// to place the link reference values in the correct location.
 type Artifact struct {
 	Format                 string         `json:"_format"`
 	ContractName           string         `json:"contractName"`