Add regression test for #11964

This issue was only ever present in the GHC 8.0.1 release candidates, but
let's add a regression test for it just to be safe.

testsuite/tests/dependent/should_run/T11964.hs

+module T11964 where
+
+import Data.Kind
+import T11964a
+
+t1 :: T Type Int
+t1 = T ()
+
+t2 :: T Star Int
+t2 = T ()

testsuite/tests/dependent/should_run/T11964a.hs

+{-# LANGUAGE TypeInType #-}
+module T11964a where
+import Data.Kind
+type Star = Type
+newtype T k (t :: k) = T ()

testsuite/tests/dependent/should_run/all.T

 
 
 # test('T11311', normal, compile_and_run, [''])
-
+test('T11964', normal, multimod_compile, ['T11964', '-v0'])