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/decl_name_conflicting.cpp

@@ -0,0 +1,20 @@
+#include <cstdarg>
+#include <cstdint>
+#include <cstdlib>
+#include <ostream>
+#include <new>
+
+enum class BindingType : uint32_t {
+  Buffer = 0,
+  NotBuffer = 1,
+};
+
+struct BindGroupLayoutEntry {
+  BindingType ty;
+};
+
+extern "C" {
+
+void root(BindGroupLayoutEntry entry);
+
+} // extern "C"