all: update generated code (#15808)

* core/types, core/vm, eth, tests: regenerate gencodec files

* Makefile: update devtools target

Install protoc-gen-go and print reminders about npm, solc and protoc.
Also switch to github.com/kevinburke/go-bindata because it's more
maintained.

* contracts/ens: update contracts and regenerate with solidity v0.4.19

The newer upstream version of the FIFSRegistrar contract doesn't set the
resolver anymore. The resolver is now deployed separately.

* contracts/release: regenerate with solidity v0.4.19

* contracts/chequebook: fix fallback and regenerate with solidity v0.4.19

The contract didn't have a fallback function, payments would be rejected
when compiled with newer solidity. References to 'mortal' and 'owned'
use the local file system so we can compile without network access.

* p2p/discv5: regenerate with recent stringer

* cmd/faucet: regenerate

* dashboard: regenerate

* eth/tracers: regenerate

* internal/jsre/deps: regenerate

* dashboard: avoid sed -i because it's not portable

* accounts/usbwallet/internal/trezor: fix go generate warnings

contracts/chequebook/contract/chequebook.sol

@@ -1,6 +1,6 @@
 pragma solidity ^0.4.18;
 
-import "https://github.com/ethereum/solidity/std/mortal.sol";
+import "./mortal.sol";
 
 /// @title Chequebook for Ethereum micropayments
 /// @author Daniel A. Nagy <daniel@ethereum.org>
@@ -11,6 +11,9 @@ contract chequebook is mortal {
     /// @notice Overdraft event
     event Overdraft(address deadbeat);
 
+    // Allow sending ether to the chequebook.
+    function() public payable { }
+
     /// @notice Cash cheque
     ///
     /// @param beneficiary beneficiary address
@@ -19,8 +22,7 @@ contract chequebook is mortal {
     /// @param sig_r signature parameter r
     /// @param sig_s signature parameter s
     /// The digital signature is calculated on the concatenated triplet of contract address, beneficiary address and cumulative amount
-    function cash(address beneficiary, uint256 amount,
-        uint8 sig_v, bytes32 sig_r, bytes32 sig_s) {
+    function cash(address beneficiary, uint256 amount, uint8 sig_v, bytes32 sig_r, bytes32 sig_s) public {
         // Check if the cheque is old.
         // Only cheques that are more recent than the last cashed one are considered.
         require(amount > sent[beneficiary]);
@@ -31,7 +33,7 @@ contract chequebook is mortal {
         // and the cumulative amount on the last cashed cheque to beneficiary.
         uint256 diff = amount - sent[beneficiary];
         if (diff <= this.balance) {
-	    // update the cumulative amount before sending
+            // update the cumulative amount before sending
             sent[beneficiary] = amount;
             beneficiary.transfer(diff);
         } else {