FileAnalysis: checkpoint in middle of big reorganization.

- FileAnalysis::Info is now just a record used for logging, the fa_file
  record type is defined in init-bare.bro as the analogue to a
  connection record.

- Starting to transfer policy hook triggers and analyzer results to
  events.

src/file_analysis/FileTimer.h

@@ -0,0 +1,31 @@
+#ifndef FILE_ANALYSIS_FILETIMER_H
+#define FILE_ANALYSIS_FILETIMER_H
+
+#include <string>
+#include "Timer.h"
+#include "FileID.h"
+
+namespace file_analysis {
+
+/**
+ * Timer to periodically check if file analysis for a given file is inactive.
+ */
+class FileTimer : public Timer {
+public:
+
+	FileTimer(double t, const FileID& id, double interval);
+
+	/**
+	 * Check inactivity of file_analysis::File corresponding to #file_id,
+	 * reschedule if active, else call file_analysis::Manager::Timeout.
+	 */
+	void Dispatch(double t, int is_expire);
+
+protected:
+
+	FileID file_id;
+};
+
+} // namespace file_analysis
+
+#endif