Compile polkadot-runtime both for Wasm ad native, allowing for testing and direct usage.

substrate/native-runtime/support/src/lib.rs

@@ -0,0 +1,10 @@
+pub use std::vec::Vec;
+
+pub fn storage(_key: &[u8]) -> Vec<u8> { vec![] }
+pub fn storage_into<T: Sized>(_key: &[u8]) -> Option<T> { None }
+pub fn set_storage(_key: &[u8], _value: &[u8]) {}
+
+#[macro_export]
+macro_rules! impl_stubs {
+	($( $name:ident ),*) => {}
+}