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/bitflags.rs

@@ -0,0 +1,30 @@
+bitflags! {
+    /// Constants shared by multiple CSS Box Alignment properties
+    ///
+    /// These constants match Gecko's `NS_STYLE_ALIGN_*` constants.
+    #[derive(MallocSizeOf, ToComputedValue)]
+    #[repr(C)]
+    pub struct AlignFlags: u8 {
+        /// 'auto'
+        const AUTO = 0;
+        /// 'normal'
+        const NORMAL = 1;
+        /// 'start'
+        const START = 1 << 1;
+        /// 'end'
+        const END = 1 << 2;
+        /// 'flex-start'
+        const FLEX_START = 1 << 3;
+    }
+}
+
+bitflags! {
+    #[repr(C)]
+    pub struct DebugFlags: u32 {
+        /// Flag with the topmost bit set of the u32
+        const BIGGEST_ALLOWED = 1 << 31;
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn root(flags: AlignFlags, bigger_flags: DebugFlags) {}