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/std_lib.c

@@ -0,0 +1,12 @@
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+typedef struct Option_i32 Option_i32;
+
+typedef struct Result_i32__String Result_i32__String;
+
+typedef struct Vec_String Vec_String;
+
+void root(const Vec_String *a, const Option_i32 *b, const Result_i32__String *c);