Restore Android test markers, but use UNSUPPORTED instead of XFAIL

Author: rprichard

libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_bounded_array.pass.cpp

@@ -7,6 +7,9 @@
 //===----------------------------------------------------------------------===//
 // UNSUPPORTED: c++03, c++11, c++14, c++17
 
+// The Clang version that Android currently uses in the CI is too old.
+// UNSUPPORTED: LIBCXX-ANDROID-FIXME
+
 // type_traits
 
 // is_bounded_array<T>

libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/has_unique_object_representations.compile.pass.cpp

@@ -8,6 +8,9 @@
 
 // UNSUPPORTED: c++03, c++11, c++14
 
+// The Clang version that Android currently uses in the CI is too old.
+// UNSUPPORTED: LIBCXX-ANDROID-FIXME
+
 // type_traits
 
 // has_unique_object_representations