Check all particles in output files when testing the periodic boundary conditions.

tests/testPeriodicBC.sh.in

@@ -11,8 +11,8 @@ do
 
     if [ -e brute_force_periodic_BC_standard.dat ]
     then
-	if python @srcdir@/difffloat.py brute_force_periodic_BC_standard.dat swift_periodic_BC_standard.dat @srcdir@/tolerance_periodic_BC_normal.dat 6
-	then
+	if python @srcdir@/difffloat.py brute_force_periodic_BC_standard.dat swift_periodic_BC_standard.dat @srcdir@/tolerance_periodic_BC_normal.dat
+  then
 	    echo "Accuracy test passed"
 	else
 	    echo "Accuracy test failed"

tests/testPeriodicBCPerturbed.sh.in

@@ -11,7 +11,7 @@ do
 
     if [ -e brute_force_periodic_BC_perturbed.dat ]
     then
-	if python @srcdir@/difffloat.py brute_force_periodic_BC_perturbed.dat swift_periodic_BC_perturbed.dat @srcdir@/tolerance_periodic_BC_perturbed.dat 6
+	if python @srcdir@/difffloat.py brute_force_periodic_BC_perturbed.dat swift_periodic_BC_perturbed.dat @srcdir@/tolerance_periodic_BC_perturbed.dat
 	then
 	    echo "Accuracy test passed"
 	else