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/bitfield.cpp

@@ -0,0 +1,16 @@
+#include <cstdarg>
+#include <cstdint>
+#include <cstdlib>
+#include <ostream>
+#include <new>
+
+struct HasBitfields {
+  uint64_t foo: 8;
+  uint64_t bar: 56;
+};
+
+extern "C" {
+
+void root(const HasBitfields*);
+
+} // extern "C"