Relax tidy rules for OS-specific code

Author: Amanieu

src/tools/tidy/src/pal.rs

@@ -59,6 +59,8 @@ const EXCEPTION_PATHS: &[&str] = &[
     "library/std/src/sys_common", // Should only contain abstractions over platforms
     "library/std/src/net/test.rs", // Utility helpers for tests
     "library/std/src/panic.rs",   // fuchsia-specific panic backtrace handling
+    "library/std/src/personality.rs",
+    "library/std/src/personality/",
 ];
 
 pub fn check(path: &Path, bad: &mut bool) {