[beta] Backports (#6891)

* v1.8.2

* Refactor static context check in CREATE. (#6886)

* Refactor static context check in CREATE.

* Fix wasm.

* Fix serialization of non-localized transactions (#6868)

* Fix serialization of non-localized transactions.

* Return proper SignedTransactions representation.

* Allow force sealing and reseal=0 for non-dev chains. (#6878)

ethcore/src/externalities.rs

@@ -240,7 +240,6 @@ impl<'a, T: 'a, V: 'a, B: 'a> Ext for Externalities<'a, T, V, B>
 			Ok(FinalizationResult{ gas_left, apply_state: false, return_data }) => {
 				ContractCreateResult::Reverted(gas_left, return_data)
 			},
-			Err(vm::Error::MutableCallInStaticContext) => ContractCreateResult::FailedInStaticCall,
 			_ => ContractCreateResult::Failed,
 		}
 	}

ethcore/src/transaction.rs

@@ -469,6 +469,11 @@ impl SignedTransaction {
 	pub fn is_unsigned(&self) -> bool {
 		self.transaction.is_unsigned()
 	}
+
+	/// Deconstructs this transaction back into `UnverifiedTransaction`
+	pub fn deconstruct(self) -> (UnverifiedTransaction, Address, Option<Public>) {
+		(self.transaction, self.sender, self.public)
+	}
 }
 
 /// Signed Transaction that is a part of canon blockchain.