Usage: ftrenamefile cid={channelID} cpw={channelPassword}
       [tcid={targetChannelID}] [tcpw={targetChannelPassword}]
       oldname={oldFilePath} newname={newFilePath}

Permissions:
  i_ft_file_rename_power
  i_ft_needed_file_rename_power

Description:
  Renames a file in a channels file repository. If the two parameters tcid and
  tcpw are specified, the file will be moved into another channels file
  repository.

Example:
  ftrenamefile cid=2 cpw= tcid=3 tcpw=secret oldname=\/Pic3.PNG newname=\/Pic3.PNG
  error id=0 msg=ok
