update variable syntax in several example input scripts

examples/snap/in.snap.compute

@@ -70,7 +70,7 @@ compute         bsum2 snapgroup2 reduce sum c_b[*]
 # fix 		bsum2 all ave/time 1 1 1 c_bsum2 file bsum2.dat mode vector
 compute		vbsum all reduce sum c_vb[*]
 # fix 		vbsum all ave/time 1 1 1 c_vbsum file vbsum.dat mode vector
-variable	db_2_25 equal c_db[2][25]
+variable	db_2_25 equal C_db[2][25]
 
 # set up compute snap generating global array
 

examples/snap/in.snap.compute.quadratic

@@ -70,7 +70,7 @@ compute         bsum2 snapgroup2 reduce sum c_b[*]
 # fix 		bsum2 all ave/time 1 1 1 c_bsum2 file bsum2.dat mode vector
 compute		vbsum all reduce sum c_vb[*]
 # fix 		vbsum all ave/time 1 1 1 c_vbsum file vbsum.dat mode vector
-variable	db_2_100 equal c_db[2][100]
+variable	db_2_100 equal C_db[2][100]
 
 # set up compute snap generating global array
 

examples/voronoi/in.voronoi

@@ -146,10 +146,10 @@ variable i2 equal 257
 compute v1 all voronoi/atom occupation
 compute r0 all   reduce sum c_v1[1]
 compute r1 all   reduce sum c_v1[2]
-variable d5a equal c_v1[${i1}][1]
-variable d5b equal c_v1[${i2}][1]
-variable d5c equal c_v1[${i1}][2]
-variable d5d equal c_v1[${i2}][2]
+variable d5a equal C_v1[${i1}][1]
+variable d5b equal C_v1[${i2}][1]
+variable d5c equal C_v1[${i1}][2]
+variable d5d equal C_v1[${i2}][2]
 thermo_style custom c_r0 c_r1 v_d5a v_d5b v_d5c v_d5d
 
 run 0

examples/voronoi/in.voronoi.data

@@ -67,7 +67,7 @@ undump          dlocal
 # local and global quantities, but
 # not per-atom quantities
 
-compute 	v2 all voronoi/atom neighbors yes edge_histo 6 peratom no
+compute 	v2 all voronoi/atom neighbors yes edge_histo 6
 
 # write voronoi local quantities to a file
 
@@ -75,7 +75,7 @@ dump            d2 all local  1 dump.neighbors2 index c_v2[1] c_v2[2] c_v2[3]
 
 # sum up a voronoi local quantity
 
-compute 	sumarea all reduce sum c_v2[3]
+compute 	sumarea all reduce sum c_v2[3] inputs local
 
 # output voronoi global quantities