servo: Merge #4826 - Add [no_link] attribute to plugins crate (from mbrubeck:cef_plugins); r=jdm

Fixes errors linking to our CEF embedding library. r? @glennw

Source-Repo: https://github.com/servo/servo
Source-Revision: 95802fe8b372727572d0557cb783dc807dfe2c29

servo/ports/cef/lib.rs

@@ -9,7 +9,7 @@
 
 #[macro_use]
 extern crate log;
-#[plugin]
+#[plugin] #[no_link]
 extern crate "plugins" as servo_plugins;
 
 extern crate servo;