Vendor dependencies for 0.3.0 release

vendor/rayon/src/private.rs

@@ -0,0 +1,26 @@
+//! The public parts of this private module are used to create traits
+//! that cannot be implemented outside of our own crate.  This way we
+//! can feel free to extend those traits without worrying about it
+//! being a breaking change for other implementations.
+
+/// If this type is pub but not publicly reachable, third parties
+/// can't name it and can't implement traits using it.
+#[allow(missing_debug_implementations)]
+pub struct PrivateMarker;
+
+macro_rules! private_decl {
+    () => {
+        /// This trait is private; this method exists to make it
+        /// impossible to implement outside the crate.
+        #[doc(hidden)]
+        fn __rayon_private__(&self) -> crate::private::PrivateMarker;
+    };
+}
+
+macro_rules! private_impl {
+    () => {
+        fn __rayon_private__(&self) -> crate::private::PrivateMarker {
+            crate::private::PrivateMarker
+        }
+    };
+}