message: ATO-83: FIX - warnings as reported by Marco (not sure which compiler)
  Some of the warnings should be defual in the future
  FIX: STAT/TStatToolkit.cxx
  * [-Wlogical-not-parentheses]
  * [-Wparentheses]
diff: @@ -1014,7 +1014,7 @@ TGraphErrors * TStatToolkit::MakeGraphErrors(TTree * tree, const char * expr, co
  graph->GetXaxis()->SetTitle(charray->At(1)->GetName());
  graph->GetYaxis()->SetTitle(charray->At(0)->GetName());
  THashList * metaData = (THashList*) tree->GetUserInfo()->FindObject("metaTable");
  - if (!metaData == 0){
  + if ( metaData != NULL){
  TNamed *nmdTitle0 = TStatToolkit::GetMetadata(tree,Form("%s.Title",charray->At(0)->GetName()));
  TNamed *nmdTitle1 = TStatToolkit::GetMetadata(tree,Form("%s.Title",charray->At(1)->GetName()));
  TNamed *nmdYAxis = TStatToolkit::GetMetadata(tree,Form("%s.AxisTitle",charray->At(0)->GetName()));
  @@ -1129,7 +1129,7 @@ TNamed* TStatToolkit::GetMetadata(TTree* tree, const char *varTagName, TString *
  }
  }
  }
  - if (nDots = metaName.CountChar('.')) break;
  + if (nDots == metaName.CountChar('.')) break;
  nDots=metaName.CountChar('.');
  }
  }
  @@ -1236,7 +1236,7 @@ TGraph * TStatToolkit::MakeGraphSparse(TTree * tree, const char * expr, const ch
  graphNew->SetTitle(chstring);
  THashList * metaData = (THashList*) tree->GetUserInfo()->FindObject("metaTable");
  - if (!metaData == 0){
  + if (metaData != NULL){
  chstring=expr;
  TObjArray *charray = chstring.Tokenize(":");
  graphNew->GetXaxis()->SetTitle(charray->At(1)->GetName());
  @@ -1689,7 +1689,7 @@ void TStatToolkit::MakeAnchorAlias(TTree * tree, TString& sTrendVars, Int_t doCh
  // check individual variables
  for (Int_t ivar=0; ivar<5; ivar++){
  variables[ivar]=descriptor->At(ivar)->GetName();
  - if (doCheck&1>0){ // check input formulas in case specified
  + if ((doCheck&1)>0){ // check input formulas in case specified
  TTreeFormula *form=new TTreeFormula("dummy",descriptor->At(ivar)->GetName(),tree);
  if (form->GetTree()==NULL){
  isOK=kFALSE;
  @@ -2277,7 +2277,7 @@ TH1* TStatToolkit::DrawHistogram(TTree * tree, const char* drawCommand, const ch
  }
  THashList * metaData = (THashList*) tree->GetUserInfo()->FindObject("metaTable");
  - if (!metaData == 0){
  + if (metaData != NULL){
  TNamed *nmdTitle0 = TStatToolkit::GetMetadata(tree,Form("%s.Title",charray->At(0)->GetName()));
  TNamed *nmdXAxis = TStatToolkit::GetMetadata(tree,Form("%s.AxisTitle",charray->At(1)->GetName()));
  TNamed *nmdTitle1 = TStatToolkit::GetMetadata(tree,Form("%s.Title",charray->At(1)->GetName()));
  