Fixes includes wrt opm-parser PR-656

Several files stopped compiling due to relying on opm-parser headers
doing includes. From opm-parser PR-656
https://github.com/OPM/opm-parser/pull/656 this assumption is no longer
valid.

opm/core/props/IncompPropertiesSinglePhase.cpp

@@ -24,7 +24,8 @@
 #include <opm/core/grid.h>
 #include <opm/core/utility/Units.hpp>
 #include <opm/common/ErrorMacros.hpp>
-// #include <iostream>
+
+#include <opm/parser/eclipse/Deck/DeckRecord.hpp>
 
 namespace Opm
 {