Merge branch 'fix-current-symlink' into 'master'

Improve 'current' symlink to backup destinations

See merge request ungleich-public/ccollect!16

ccollect

@@ -868,7 +868,7 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
     latest_dir="$(ls -${TSORT}p1 "${ddir}" | grep '/$' | head -n 1)" || \
         _exit_err "Failed to list content of ${ddir}."
 
-    ln -snf "${ddir}${latest_dir}" "${ddir}current" || \
+    ln -snf "${ddir}/${latest_dir}" "${ddir}/current" || \
         _exit_err "Failed to create 'current' symlink."
 
     #