changes to compile compositional with flowproblem

Author: hnil

opm/models/ptflash/flashindices.hh

@@ -50,6 +50,15 @@ class FlashIndices
     using EnergyIndices = Opm::EnergyIndices<PVOffset + numComponents, enableEnergy>;
 
 public:
+    static constexpr bool waterEnabled = false;
+    static constexpr bool gasEnabled = true;
+    static constexpr bool oilEnabled = true;
+    static constexpr bool waterPhaseIdx = -1;
+    static constexpr bool waterGasIdx = 0;
+    static constexpr bool waterOilIdx = 1;
+    static constexpr bool compositionSwitchIdx = -1;
+    static constexpr bool numPhases = 3;
+    unsigned canonicalToActiveComponentIndex(unsigned solventCompIdx){return solventCompIdx;};
     //! number of equations/primary variables
     static const int numEq = numComponents + EnergyIndices::numEq_;
 
@@ -60,7 +69,7 @@ public:
 
     //! Index of the molefraction of the first component
     static constexpr int z0Idx = pressure0Idx + 1;
-    
+
     // equation indices
 
     //! Index of the mass conservation equation for the first