Adding is_complete flag to FileState and enabling fs-watcher to use this flag in some (not all) cases

Change-Id: I9b02ef933074ec5313af9a84b5b465e8af6e80ea
diff --git a/src/action-log.h b/src/action-log.h
index f28a398..9c6fdd6 100644
--- a/src/action-log.h
+++ b/src/action-log.h
@@ -100,6 +100,14 @@
   ActionItemPtr
   LookupAction (const Ccnx::Name &actionName);
 
+  /**
+   * @brief Set "complete" flag
+   *
+   * The call will do nothing if FileState does not have a record for the file (e.g., file got subsequently deleted)
+   */
+  void
+  SetFileComplete (const std::string &filename);
+
   ///////////////////////////
   // File state operations //
   ///////////////////////////