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

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= oldname=\/Pic3.PNG newname=\/Pic3.PNG
   error id=0 msg=ok