Teach compiletest to ignore platform triples

src/tools/compiletest/src/header.rs

@@ -897,6 +897,7 @@ impl Config {
             let name = line[prefix.len() + 1..].split(&[':', ' '][..]).next().unwrap();
 
             if name == "test" ||
+                &self.target == name ||                             // triple
                 util::matches_os(&self.target, name) ||             // target
                 util::matches_env(&self.target, name) ||            // env
                 name == util::get_arch(&self.target) ||             // architecture