Beremiz service doesn't stop on Ctrl-C if it's started with '-x 0'

[Andrey Skvortsov]

$ ./Beremiz_service.py -x 0 /tmp/f
Beremiz_service:  1.2-9deec258ab1a+
HTTP interface port : 8009
WAMP authentication has no secret configured
WAMP deactivated in configuration
Pyro port : 3000
Current working directory : /tmp/f
UI thread started successfully.
^C^C^C^C^C^C^C^C