Check for packedptr when producing output of --version

Summary: Would like to see this when running `hhvm --version`

Reviewed By: WizKid

Differential Revision: D86909805

fbshipit-source-id: 382a2c9c2e7d5c706885060c6217d3691247d50b

Author: mdko

hphp/runtime/base/program-functions.cpp

@@ -1764,7 +1764,7 @@ static int execute_program_impl(int argc, char** argv) {
     cout << "HipHop VM";
     cout << " " << HHVM_VERSION;
     cout << " (" << (debug ? "dbg" : "rel") << ")";
-    cout << " (" << (use_lowptr ? "lowptr" : "non-lowptr") << ")\n";
+    cout << " (" << (use_packedptr ? "packedptr" : use_lowptr ? "lowptr" : "non-lowptr") << ")\n";
     cout << "Compiler: " << compilerId() << "\n";
     cout << "Repo schema: " << repoSchemaId() << "\n";
     return 0;