Also move implementation of normalise() method to cxx file

Author: tomchapman

include/bout/tokamak_coordinates.hxx

@@ -22,15 +22,7 @@ namespace bout {
 
         TokamakOptions(Mesh &mesh);
 
-        void normalise(BoutReal Lbar, BoutReal Bbar, BoutReal ShearFactor) {
-            Rxy /= Lbar;
-            Bpxy /= Bbar;
-            Btxy /= Bbar;
-            Bxy /= Bbar;
-            hthe /= Lbar;
-            I *= Lbar * Lbar * Bbar * ShearFactor;
-            dx /= Lbar * Lbar * Bbar;
-        }
+        void normalise(BoutReal Lbar, BoutReal Bbar, BoutReal ShearFactor);
     };
 
     BoutReal get_sign_of_bp(const Field2D &Bpxy);

src/mesh/tokamak_coordinates.cxx

@@ -28,6 +28,16 @@ namespace bout {
         }
     }
 
+    void TokamakOptions::normalise(BoutReal Lbar, BoutReal Bbar, BoutReal ShearFactor) {
+        Rxy /= Lbar;
+        Bpxy /= Bbar;
+        Btxy /= Bbar;
+        Bxy /= Bbar;
+        hthe /= Lbar;
+        I *= Lbar * Lbar * Bbar * ShearFactor;
+        dx /= Lbar * Lbar * Bbar;
+    }
+
     void set_tokamak_coordinates_on_mesh(TokamakOptions &tokamak_options, Mesh &mesh, BoutReal Lbar,
                                          BoutReal
                                          Bbar, BoutReal