Make subkey support Sr25519 crypto (#1933)

* Make subkey support Sr25519 crypto.

* Rebuild runtime.

* Build and rejig locks.

* Fix grumbles

* Derivations

* Introduce tests

substrate/node/runtime/src/lib.rs

@@ -61,7 +61,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	impl_name: create_runtime_str!("substrate-node"),
 	authoring_version: 10,
 	spec_version: 34,
-	impl_version: 34,
+	impl_version: 35,
 	apis: RUNTIME_API_VERSIONS,
 };