Merge branch 'ungleich-master-patch-28394' into 'master'

make rsync return code available in post_exec

See merge request ungleich-public/ccollect!14

ccollect

@@ -824,6 +824,11 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
     rsync "$@" "${source}" "${destination_dir}"; ret=$?
     _techo "Finished backup (rsync return code: $ret)."
 
+    #
+    # export rsync return code, might be useful in post_exec
+    #
+    export rsync_return_code=$ret
+
     #
     # Set modification time (mtime) to current time, if sorting by mtime is enabled
     #