Issue #61: Forgot to add some files

apps/openmw/mwmechanics/alchemy.cpp

@@ -0,0 +1,7 @@
+
+#include "alchemy.hpp"
+
+void MWMechanics::Alchemy::setAlchemist (const MWWorld::Ptr& npc)
+{
+    mNpc = npc;
+}

apps/openmw/mwmechanics/alchemy.hpp

@@ -0,0 +1,22 @@
+#ifndef GAME_MWMECHANICS_ALCHEMY_H
+#define GAME_MWMECHANICS_ALCHEMY_H
+
+#include "../mwworld/ptr.hpp"
+
+namespace MWMechanics
+{
+    /// \brief Potion creatin via alchemy skill
+    class Alchemy
+    {
+            MWWorld::Ptr mNpc;
+
+        public:
+        
+            void setAlchemist (const MWWorld::Ptr& npc);
+            ///< Set alchemist and configure alchemy setup accordingly. \a npc may be empty to indicate that
+            /// there is no alchemist (alchemy session has ended).
+    };
+}
+
+#endif
+