Move include of config.h to cpp-file

One should never include config.h in a header. To the very least it results
in redefined macros.

opm/core/props/satfunc/RelpermDiagnostics.cpp

@@ -17,6 +17,10 @@
   along with OPM.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif // HAVE_CONFIG_H
+
 #include <opm/core/props/satfunc/RelpermDiagnostics.hpp>
 #include <opm/core/props/phaseUsageFromDeck.hpp>
 

opm/core/props/satfunc/RelpermDiagnostics.hpp

@@ -23,10 +23,6 @@
 #include <vector>
 #include <utility>
 
-#if HAVE_CONFIG_H
-#include "config.h"
-#endif // HAVE_CONFIG_H
-
 #include <opm/material/fluidmatrixinteractions/EclEpsScalingPoints.hpp>
 
 namespace Opm {