RPM build fix (reverted CI changes which will need to be un-reverted or made conditional) and vendor Rust dependencies to make builds much faster in any CI system.

zeroidc/vendor/ryu/tests/macros/mod.rs

@@ -0,0 +1,8 @@
+macro_rules! check {
+    ($f:tt) => {
+        assert_eq!(pretty($f), stringify!($f));
+    };
+    (-$f:tt) => {
+        assert_eq!(pretty(-$f), concat!("-", stringify!($f)));
+    };
+}