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/namespaces_constant.cpp

@@ -0,0 +1,25 @@
+#include <cstdarg>
+#include <cstdint>
+#include <cstdlib>
+#include <ostream>
+#include <new>
+
+namespace constants {
+namespace test {
+
+static const int32_t FOO = 10;
+
+static const float ZOM = 3.14;
+
+struct Foo {
+  int32_t x[FOO];
+};
+
+extern "C" {
+
+void root(Foo x);
+
+} // extern "C"
+
+} // namespace test
+} // namespace constants