Added possibility of internal pegs. It can break the system however

Samo Penic

2016-07-11 e984829db39b2778e4f66c34524329ad09749c45

 src/general.h

@@ -257,6 +257,7 @@
   long int nczmax;
   long int npoly;
   long int nmono;
   long int internal_poly;
   long int nfil;
   long int nfono;
   long int R_nucleus;
@@ -313,6 +314,7 @@
   ts_double R_nucleusX;
   ts_double R_nucleusY;
   ts_double R_nucleusZ;
   ts_double nucleus_center[3];
    ts_double area;
} ts_vesicle;