Syslog: re-open syslog udp socket on send error (ticket #1477).
Syslog: re-open syslog udp socket on send error (ticket #1477).

Previously, only unix domain sockets were reopened to tolerate cases when
local syslog server was restarted.  It makes sense to treat other cases
(for example, local IP address changes) similarly.

hy0kl/nginx,hy0kl/nginx,hy0kl/nginx