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/rust/nonnull.rs

@@ -0,0 +1,19 @@
+use std::ptr::NonNull;
+
+struct Opaque;
+
+#[repr(C)]
+pub struct Foo<T> {
+    a: NonNull<f32>,
+    b: NonNull<T>,
+    c: NonNull<Opaque>,
+    d: NonNull<NonNull<T>>,
+    e: NonNull<NonNull<f32>>,
+    f: NonNull<NonNull<Opaque>>,
+    g: Option<NonNull<T>>,
+    h: Option<NonNull<i32>>,
+    i: Option<NonNull<NonNull<i32>>>,
+}
+
+#[no_mangle]
+pub extern "C" fn root(arg: NonNull<i32>, foo: *mut Foo<u64>, d: NonNull<NonNull<Opaque>>) { }