major bug in Campbell SHARE GMPE

[Laurentiu D.]

[et=1h]
[at=1h]

Wrong argument for the get Standard deviation of the Campbell 2003 SHARE GMPE
rake parameter should be replaced by "mag" - parameter in the following methods.

        public double getStdDev(){
  return getStdDev(iper, rake, stdDevType);
 }

 public double getStdDev(int iper, double rake, String stdDevType){
  double std = super.getStdDev(iper, mag, stdDevType);
  return std * AdjustFactorsSHARE.sig_AFrock_CAMBPELL2003[iper];
 }

[Lars Butler (lars-butler)]

Pull request: https://github.com/gem/OpenSHA/pull/18