added examples for P3M with ScaFaCoS

examples/USER/scafacos/in.scafacos.cw.p3m

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+
+units		lj
+atom_style  charge	
+
+read_data data.cloud_wall
+
+velocity	all set 0.0 0.0 0.0 mom no
+
+pair_style	zero 1.0
+pair_coeff	* * 
+
+neighbor	1.0 bin
+neigh_modify	delay 0
+
+fix     1 all nve
+kspace_style scafacos p3m  0.001
+kspace_modify scafacos tolerance field 
+
+timestep	0.005
+
+thermo_style custom step atoms cpu temp pe ke etotal ecoul press
+
+run_style verlet
+
+#dump simple all custom 1000 id x y z vx vy vz 
+#dump dmp    all custom 1000 part.dump id mol x y z vx vy vz fx fy fz q mass
+#dump dmpvtk all vtk 1000 vtk/part_*.vtk id mol x y z vx vy vz fx fy fz q mass 
+#dump_modify dmpvtk pad 7
+
+thermo 10
+run	100

examples/USER/scafacos/in.scafacos.p3m

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+# Point dipoles in a 2d box
+
+units		lj
+atom_style  charge	
+
+read_data data.NaCl
+
+replicate 8 8 8 
+
+velocity	all create 1.5 49893
+
+neighbor	1.0 bin
+neigh_modify	delay 0
+
+fix             1 all nve
+
+# LAMMPS computes pairwise and long-range Coulombics
+
+#pair_style      coul/long 3.0
+#pair_coeff      * *
+#kspace_style    pppm 1.0e-3
+
+# Scafacos computes entire long-range Coulombics
+# use dummy pair style to perform atom sorting
+
+pair_style	zero 1.0
+pair_coeff	* * 
+
+#fix		2 all scafacos p3m tolerance field 0.001
+
+kspace_style    scafacos p3m 0.001
+kspace_modify    scafacos tolerance field
+
+timestep	0.005
+thermo          10
+
+run		100