tools: Minor fix to gpg-connect-agent options.

* tools/gpg-connect-agent.c (enum cmd_and_opt_values): Move
oUnBuffered more to the top so that oNoop won't not get the value 'v'.

doc/tools.texi

@@ -1451,6 +1451,13 @@ non-control characters.
 Decode data lines.  That is to remove percent escapes but make sure that
 a new line always starts with a D and a space.
 
+@item -u
+@itemx --unbuffered
+@opindex unbuffered
+Set stdin and stdout into unbuffered I/O mode.  This this sometimes
+useful for scripting.
+
+
 @end table
 
 @mansect control commands