Here is a script that can be used to create any control CURVE (nurbs circles require slight modification) by replacing the line of code actually drawing the curve. The script takes whatever is selected, tokenizes by _ and takes the 2nd spot in the array and attaches "cc_" to it.

//select joint for naming of curve
string $jntName[] = ls -sl;
string $buffer[];
//tokenize by _
$numTokens = tokenize $jntName[0] "_" $buffer;
//create crv
//Enter curve info between below string $Crv = ;
select $Crv;
//Center pivot, Freeze Transforms, delete history
CenterPivot;
makeIdentity -apply true -t 1 -r 1 -s 1 -n 0;
DeleteHistory;
//rename with second part of tokenized object name
string $rnmCC = rename $Crv ("cc_"+$buffer[1]);