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.compat.c

@@ -0,0 +1,32 @@
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#ifdef __cplusplus
+namespace constants {
+namespace test {
+#endif // __cplusplus
+
+#define FOO 10
+
+#define ZOM 3.14
+
+typedef struct {
+  int32_t x[FOO];
+} Foo;
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+void root(Foo x);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif // __cplusplus
+
+#ifdef __cplusplus
+} // namespace test
+} // namespace constants
+#endif // __cplusplus