Merge remote branch 'origin/topic/seth/syslog-analyzer'

Note: I didn't merge anything in policy/*. Seems there was some
unrelated stuff in there, and the ticket says that the policy script
was a dummy for now anyway.

* origin/topic/seth/syslog-analyzer:
  Updates for syslog analyzer to prepare it for merging.
  Added the initial syslog analyzer and policy script.
  Adding some of the initial scripts that are going to be merged from my script repository.

src/syslog-analyzer.pac

@@ -0,0 +1,27 @@
+
+connection Syslog_Conn(bro_analyzer: BroAnalyzer)
+{
+	upflow = Syslog_Flow;
+	downflow = Syslog_Flow;
+};
+
+flow Syslog_Flow
+{
+	datagram = Syslog_Message withcontext(connection, this);
+
+	function process_syslog_message(m: Syslog_Message): bool
+		%{
+		BifEvent::generate_syslog_message(connection()->bro_analyzer(),
+		                                  connection()->bro_analyzer()->Conn(),
+		                                  ${m.PRI.facility},
+		                                  ${m.PRI.severity},
+		                                  new StringVal(${m.msg}.length(), (const char*) ${m.msg}.begin())
+		                                  );
+		return true;
+		%}
+
+};
+
+refine typeattr Syslog_Message += &let {
+	proc_syslog_message = $context.flow.process_syslog_message(this);
+};