for BINT : put nucsyn_metallicity outside NUCSYN

update CHANGES for binary_c_help

CHANGES

+V2.1.6
+
+Add binary_c_help API function (for David).
+
 V2.1.5
 
 Updates to the meson build to make it more efficient and work on more platforms.

src/binary_c_debug.h

@@ -100,11 +100,11 @@
  * this is not shown.
  */
 
-#define Debug_show_expression " #=%ld Jorb=%g a=%g P=%g omegaorb=%g ",\
-        (long int)stardata->model.model_number,                       \
-        stardata->common.orbit.angular_momentum,                      \
-        stardata->common.orbit.separation,\
-        stardata->common.orbit.period,\
+#define Debug_show_expression " #=%ld Jorb=%g a=%g P=%g omegaorb=%g ",  \
+        (long int)stardata->model.model_number,                         \
+        stardata->common.orbit.angular_momentum,                        \
+        stardata->common.orbit.separation,                              \
+        stardata->common.orbit.period,                                  \
         stardata->common.orbit.angular_frequency
 
 //#undef Debug_show_expression

src/binary_c_structures.h

@@ -1846,8 +1846,9 @@ struct common_t {
 #endif//ADAPTIVE_RLOF
     double monte_carlo_kick_normfac;
 
-#ifdef NUCSYN
     Abundance nucsyn_metallicity; // Z to pass to SNe routines for GCE
+#ifdef NUCSYN
+
 
 #ifdef LOG_BARIUM_STARS
     double barium_prevt;