Setting up release of 'old' for 4th May 2018

Merge commit '1e523e52465cfe46874f7b7d0d1bae8b341a8881'

Author: amereghe

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "utilities/externals/SixDeskDB"]
+	path = utilities/externals/SixDeskDB
+	url = git://github.com/SixTrack/SixDeskDB

boinc_software/cronjobs/clean.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+nDays=60
+
+echo ""
+echo "--> cleaning at `date`"
+
+# 
+echo "--> remove all files older than ${nDays} days..."
+find . -mtime +${nDays} -name "*.zip" -print -exec rm {} \;
+
+# 
+echo "--> remove all directories with no .zip files at all"
+for tmpDir in `find . -maxdepth 1 -type d -exec bash -c "echo -ne '{} '; ls '{}' | wc -l" \; | awk '$NF==1 {print ($1)}'` ; do
+    deleteDir=`find ${tmpDir} -maxdepth 1 -type d -exec bash -c "echo -ne '{} '; ls '{}' | wc -l" \; | awk '$NF==0 {print ($1)}'`
+    if [ -n "${deleteDir}" ] ; then
+	tree ${tmpDir}
+	rm -rf ${tmpDir}
+    fi
+done