fixed example so that P3M also works, changed tolerance type in the FMM example

examples/USER/scafacos/data.NaCl

@@ -4,9 +4,9 @@ LAMMPS Description
 
 2 atom types
 
-0 2 xlo xhi 
-0 2 ylo yhi 
-0 2 zlo zhi 
+0 1 xlo xhi 
+0 1 ylo yhi 
+0 1 zlo zhi 
 
 Masses
 
@@ -15,11 +15,11 @@ Masses
 
 Atoms
 
-1  2 1 0 0 0
-2  1 -1 1 0 0
-3  1 -1 0 1 0
-4  2 1 1 1 0
-5  1 -1 0 0 1
-6  2 1 1 0 1
-7  2 1 0 1 1
-8  1 -1 1 1 1
+1  2 1 0.25 0.25 0.25
+2  1 -1 0.75 0.25 0.25
+3  1 -1 0.25 0.75 0.25
+4  2 1 0.75 0.75 0.25
+5  1 -1 0.25 0.25 0.75
+6  2 1 0.75 0.25 0.75
+7  2 1 0.25 0.75 0.75
+8  1 -1 0.75 0.75 0.75

examples/USER/scafacos/in.scafacos.fmm

@@ -29,7 +29,7 @@ pair_coeff	* *
 #fix		2 all scafacos p3m tolerance field 0.001
 
 kspace_style    scafacos fmm 0.001
-kspace_modify    scafacos tolerance energy_rel
+kspace_modify    scafacos tolerance energy
 
 timestep	0.005
 thermo          10