Benchmark Polkadot Claims Pallet (#876)

* fix

* Starting to add benchmarks

* make compile

* add benchmarks

* Make work with Substrate master

* Bench validate unsigned

* back to polkadot master

* starting to add cli with feature flag

* more stuff

* Add to kusama

* Update Cargo.lock

* fix dev dep

* bump wasm builder

* Remove encode from keccak benchmark

* bump spec

* Add weight documentation

* Update Cargo.lock

* Update check_runtime.sh

* Update publish_draft_release.sh

* Update Cargo.lock

Co-authored-by: thiolliere <gui.thiolliere@gmail.com>

polkadot/primitives/src/parachain.rs

@@ -16,8 +16,8 @@
 
 //! Polkadot parachain types.
 
-use rstd::prelude::*;
-use rstd::cmp::Ordering;
+use sp_std::prelude::*;
+use sp_std::cmp::Ordering;
 use parity_scale_codec::{Encode, Decode};
 use bitvec::vec::BitVec;
 use super::{Hash, Balance};
@@ -646,7 +646,7 @@ pub struct FeeSchedule {
 impl FeeSchedule {
 	/// Compute the fee for a message of given size.
 	pub fn compute_fee(&self, n_bytes: usize) -> Balance {
-		use rstd::mem;
+		use sp_std::mem;
 		debug_assert!(mem::size_of::<Balance>() >= mem::size_of::<usize>());
 
 		let n_bytes = n_bytes as Balance;