message: Rename application level prefixes -> namespaces
diff: @@ -54,9 +54,9 @@ impl<'a, T: ReadonlyStorage> ReadonlyPrefixedStorage<'a, T> {
  // note: multilevel is here for demonstration purposes, but may well be removed
  // before exposing any of these demo apis
  - fn multilevel(prefixes: &[&[u8]], storage: &'a T) -> Self {
  + fn multilevel(namespaces: &[&[u8]], storage: &'a T) -> Self {
  ReadonlyPrefixedStorage {
  - prefix: key_prefix_nested(prefixes),
  + prefix: key_prefix_nested(namespaces),
  storage,
  }
  }
  @@ -85,9 +85,9 @@ impl<'a, T: Storage> PrefixedStorage<'a, T> {
  // note: multilevel is here for demonstration purposes, but may well be removed
  // before exposing any of these demo apis
  - fn multilevel(prefixes: &[&[u8]], storage: &'a mut T) -> Self {
  + fn multilevel(namespaces: &[&[u8]], storage: &'a mut T) -> Self {
  PrefixedStorage {
  - prefix: key_prefix_nested(prefixes),
  + prefix: key_prefix_nested(namespaces),
  storage,
  }
  }
  