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/function_args.c

@@ -0,0 +1,10 @@
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+void unnamed(const uint64_t*);
+
+void pointer_test(const uint64_t *a);
+
+void print_from_rust(void);