[backup/portable] properly write the eid numrange generator (the eid is no more a sequence)
Bump format version to 1.1.
Related to #4870338
import ConfigParser
try:
undo_actions = config.cfgfile_parser.get('MAIN', 'undo-support', False)
except ConfigParser.NoOptionError:
pass # this conf. file was probably already migrated
else:
config.global_set_option('undo-enabled', bool(undo_actions))