New signatures for the following functions:

  void  InitExpo(Int_t first=0, Int_t last=0);
  void  InitGaus(Int_t first=0, Int_t last=0);
  void  InitPolynom(Int_t first=0, Int_t last=0);
  void  LeastSquareFit(Int_t m, Double_t *a, Int_t first=0, Int_t last=0);
  void  LeastSquareLinearFit(Int_t n, Double_t &a0, Double_t &a1, Int_t &ifail, Int_t first, Int_t last);

The global variables gxfirst and gxlast have been deleted.


git-svn-id: http://root.cern.ch/svn/root/trunk@4279 27541ba8-7e3a-0410-8455-c3a389f83636