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/cbindgen/tests/expectations/include_guard.cpp

@@ -0,0 +1,10 @@
+#ifndef INCLUDE_GUARD_H
+#define INCLUDE_GUARD_H
+
+extern "C" {
+
+void root();
+
+} // extern "C"
+
+#endif // INCLUDE_GUARD_H