updated renameFile which wasn’t working with ftps

from -cu to -RNFR

Author: kneussmichael

Project/Sources/Classes/FileTransfer_curl.4dm

@@ -193,7 +193,7 @@ Function renameFile($sourcepath : Text; $targetpath : Text)->$success : Object
 	ASSERT:C1129($targetpath#""; "target path must not be empty")
 	$url:=This:C1470._buildURL()
 	If (This:C1470._protocol#"SFTP")
-		$url:=$url+" -Q "+Char:C90(34)+"-cu "+$sourcepath+Char:C90(34)+" -Q "+Char:C90(34)+"-RNTO "+$targetpath+Char:C90(34)
+		$url:=$url+" -Q "+Char:C90(34)+"-RNFR "+$sourcepath+Char:C90(34)+" -Q "+Char:C90(34)+"-RNTO "+$targetpath+Char:C90(34)
 	Else 
 		$url:=$url+" -Q "+Char:C90(34)+"-RENAME "+$sourcepath+Char:C90(34)+" "+$targetpath+Char:C90(34)
 	End if