Update DNRM2 function declaration in norm.c

Author: jrfaeder

bng2/Network3/src/util/mathutils/norm.c

@@ -12,8 +12,8 @@ double NORM( double *a, int dim){
     int n;
     int inca=1;
     double norm;
-    extern double DNRM2();
-
+    extern double DNRM2(int *n, double *x, int *incx);
+    
     n=dim;
     return(DNRM2(&n, a, &inca));
 }