fix dep on unreleased corpus2 features

tests/getsymbols.cpp

@@ -44,7 +44,7 @@ struct SymbolsFix
 		gnd = tagset.parse_symbol("gnd");
 		nmb = tagset.parse_symbol("nmb");
 		vcl = tagset.parse_symbol("vcl");
-		pos.set_pos(Corpus2::make_full_mask());
+		pos.set_pos(-1); //todo
 	}
 
 	boost::shared_ptr<Corpus2::Sentence> s;