Fix mmapply file rename with proper bracing on variable name

run-mmpol.sh

@@ -39,4 +39,4 @@ fi
 
 # tag output file with run metadata
 outfile=`ls -t $tmpglobal | head -1`
-mv -n $tmpglobal/$outfile $tmpglobal/$outfile_$filetag
+mv -n $tmpglobal/$outfile $tmpglobal/${outfile}_$filetag