switch from __clang_major__/__clang_minor__ to TEST_CLANG_VER

Author: rprichard

libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_array.pass.cpp

@@ -79,7 +79,7 @@ int main(int, char**)
     // correct handling of std::is_array<T[0]>. This test will pass as long as
     // Clang and libc++ come from the same LLVM commit, but we can't detect that
     // here.
-#if !defined(__ANDROID__) || __clang_major__ != 19 || __clang_minor__ != 0
+#if !defined(__ANDROID__) || TEST_CLANG_VER != 1900
     test_is_not_array<char[0]>();
 #endif
     test_is_array<char[]>();