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/struct_self.cpp

@@ -0,0 +1,21 @@
+#include <cstdarg>
+#include <cstdint>
+#include <cstdlib>
+#include <ostream>
+#include <new>
+
+template<typename T>
+struct Foo {
+  const int32_t *something;
+};
+
+struct Bar {
+  int32_t something;
+  Foo<Bar> subexpressions;
+};
+
+extern "C" {
+
+void root(Bar b);
+
+} // extern "C"