Fixed runtime's reconnecting loop not stopping when re-configuring WAMP.
In case WAMP was already trying to connect without success and user change WAMP configuration through web interface, previous ReconnectingClient wasn't stopped.

          <xsd:attribute name="Command" type="xsd:string" use="optional" default="make -C %(buildpath)s all BEREMIZSRC=%(src)s BEREMIZCFLAGS=%(cflags)s MD5=%(md5)s USE_BEREMIZ=1 FROM_BEREMIZ=1"/>