fix unit tests by not using the new create_eid implementation with sqlite
Actually, fix a couple of issues with a previous attempt:
* do not use double underscores as method patching will fail with these
* old method must always be used with sqlite regardless of the no_sqlite_wrap attribute
# some entities have been added before schema entities, fix the 'is' and
# 'is_instance_of' relations
for rtype in ('is', 'is_instance_of'):
sql('INSERT INTO %s_relation '
'SELECT X.eid, ET.cw_eid FROM entities as X, cw_CWEType as ET '
'WHERE X.type=ET.cw_name AND NOT EXISTS('
' SELECT 1 from is_relation '
' WHERE eid_from=X.eid AND eid_to=ET.cw_eid)' % rtype)