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/forward_declaration.both.c

@@ -0,0 +1,50 @@
+#if 0
+''' '
+#endif
+#if defined(CBINDGEN_STYLE_TYPE)
+/* ANONYMOUS STRUCTS DO NOT SUPPORT FORWARD DECLARATIONS!
+#endif
+#if 0
+' '''
+#endif
+
+
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+typedef struct StructInfo {
+  const struct TypeInfo *const *fields;
+  uintptr_t num_fields;
+} StructInfo;
+
+typedef enum TypeData_Tag {
+  Primitive,
+  Struct,
+} TypeData_Tag;
+
+typedef struct TypeData {
+  TypeData_Tag tag;
+  union {
+    struct {
+      struct StructInfo struct_;
+    };
+  };
+} TypeData;
+
+typedef struct TypeInfo {
+  struct TypeData data;
+} TypeInfo;
+
+void root(struct TypeInfo x);
+
+#if 0
+''' '
+#endif
+#if defined(CBINDGEN_STYLE_TYPE)
+*/
+#endif
+#if 0
+' '''
+#endif