[server] portable dump format supports now ZIP64 extensions by default (closes #1912535) ZIP files can use the ZIP64 extensions when the zipfile is larger than 2 GB. zipfile will raise an exception when the ZIP file would require ZIP64 extensions. Note: ZIP64 extensions are disabled by default in stdlib because the default zip and unzip commands on Unix (the InfoZIP utilities) don’t support these extensions.

# 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)