Make view12/14/15 parallel (one slice per job)

Currently it takes 38 slices, and holds up the next jobs.

scripts/view12/generate_eps

@@ -18,7 +18,7 @@ tan ()
 
 
 function print_the_help {
-  echo "USAGE: $0 -i <PRIM_FILE>  "
+  echo "USAGE: $0 -i <PRIM_FILE> <slices ...> "
   echo "  OPTIONS: "
   echo "            -t,--tag           filename tag (default: view1)"
   exit 
@@ -48,12 +48,16 @@ do
       shift # past argument
       shift # past value
       ;;
-    *)    # unknown option
+    -[a-zA-Z]*) # unknown option
       #POSITIONAL+=("$1") # save it in an array for later
       echo "unknown option $1"
       print_the_help
       shift # past argument
       ;;
+    *)     # positional options
+      #POSITIONAL+=("$1") # save it in an array for later
+      shift # past argument
+      ;;
   esac
 done
 set -- "${POSITIONAL[@]}" # restore positional parameters
@@ -90,7 +94,8 @@ make_slice(){
   rm "${FILE_TAG}_temp0.prim"
   rm "${FILE_TAG}.prim"
 }
-for zzz in $(seq 50 50 2000) ;
+
+for zzz in $@ ;
 do
   make_slice ${zzz} & 
 done