save and retrieve chrsm_ information to Tree for Point Mutations

src/libaevol/mutation/PointMutation.cpp

@@ -56,6 +56,9 @@ PointMutation::PointMutation(int32_t pos, char choice) : pos_(pos), base_(choice
 void PointMutation::save(gzFile backup_file) const {
   int8_t tmp_mut_type = SWITCH;
   gzwrite(backup_file, &tmp_mut_type, sizeof(tmp_mut_type));
+  #ifdef __EUKARYOTE
+  gzwrite(backup_file, &chrsm_, sizeof(chrsm_));
+  #endif
   gzwrite(backup_file, &pos_, sizeof(pos_));
   #ifdef BASE_4
   gzwrite(backup_file, &base_, sizeof(base_));
@@ -63,6 +66,9 @@ void PointMutation::save(gzFile backup_file) const {
 }
 
 void PointMutation::load(gzFile backup_file) {
+  #ifdef __EUKARYOTE
+  gzread(backup_file, &chrsm_, sizeof(chrsm_));
+  #endif
   gzread(backup_file, &pos_, sizeof(pos_));
   #ifdef BASE_4
   gzread(backup_file, &base_, sizeof(base_));