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

Samo Penic

2016-07-11 e984829db39b2778e4f66c34524329ad09749c45

 src/general.h

@@ -257,9 +257,13 @@
   long int nczmax;
   long int npoly;
   long int nmono;
   long int internal_poly;
   long int nfil;
   long int nfono;
   long int R_nucleus;
   ts_double R_nucleusX;
   ts_double R_nucleusY;
   ts_double R_nucleusZ;
   long int pswitch;
    long int constvolswitch;
    long int constareaswitch;
@@ -307,6 +311,10 @@
   ts_int pswitch;
    ts_tape *tape;
   ts_double R_nucleus;
   ts_double R_nucleusX;
   ts_double R_nucleusY;
   ts_double R_nucleusZ;
   ts_double nucleus_center[3];
    ts_double area;
} ts_vesicle;