Fix qbox_reduce.sh, remove dep on get_atomset.sh

util/qbox_reduce.sh

 #!/bin/bash
-# reduce qbox restart file to atomset file
+# Reduce a qbox restart file to an atomset file
+# The original file is removed
 # use: qbox_reduce.sh file.xml [file.xml ..]
 for f in ${*}
 do
   name=${f%.xml}
   atomset_name=${name}_atomset
   echo $name.xml "->" $atomset_name.xml
-  get_atomset $f > $atomset_name.xml
+  nlines=$(grep /atomset -m 1 -n $f | cut -f1 -d: - )
+  head -$nlines $f > $atomset_name.xml
+  echo "</fpmd:sample>" >> $atomset_name.xml
   rm $f
 done