Fix race condition in add_outbound_files() causing "Unable to open FLO file".
The directory list is catpured *before* the lock file is "taken", so it can happen that another process (e.g. instance of binkit) has dealt with one or more of the files by the time we take the lock and attempt to open the file. Also, updated error log messages a bit.
Showing with 9 additions and 9 deletions