partial backport of support for adbh's new interface to backup_command and restore_command
these methods can return lists or strings which are passed to subprocess.call
without or with the shell=True parameter respectively.
#!/bin/sh
rm -f web/test/tmpdb*
rm -f web/tali18n.py
rm -f applications/*/test/tmpdb*
rm -f applications/*/tali18n.py
rm -f applications/*/i18n/*_full.po
rm -f applications/*/data/Schema.dot