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/monomorph_2.both.compat.c

@@ -0,0 +1,30 @@
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+typedef struct A A;
+
+typedef struct B B;
+
+typedef struct List_A {
+  struct A *members;
+  uintptr_t count;
+} List_A;
+
+typedef struct List_B {
+  struct B *members;
+  uintptr_t count;
+} List_B;
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+void foo(struct List_A a);
+
+void bar(struct List_B b);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif // __cplusplus