Specified a default stream name (ANALYSIS) for all histogram handling components.

This is to be able to simplify user analysis job configurations a bit. I chose the
'ANALYSIS' name instead of something like 'HISTOGRAMS', as I intend to re-use the
same name for writing user ntuples as well.


Former-commit-id: 36ebb9de67abf9aa893084023825f6b17703687f

Control/AthenaBaseComps/src/AthHistogramAlgorithm.cxx

@@ -44,7 +44,7 @@ AthHistogramAlgorithm::AthHistogramAlgorithm( const std::string& name,
                   "ROOT objects to ROOT files" );
   //  declareProperty("THistService",      m_histSvc, "The THistSvc" );
   
-  declareProperty("RootStreamName",    m_prefix  = "/", "Name of the output ROOT stream (file) that the THistSvc uses");
+  declareProperty("RootStreamName",    m_prefix  = "/ANALYSIS", "Name of the output ROOT stream (file) that the THistSvc uses");
   declareProperty("RootDirName",       m_rootDir = "",
                   "Name of the ROOT directory inside the ROOT file where the histograms will go");
 

Control/AthenaBaseComps/src/AthHistogramFilterAlgorithm.cxx

@@ -43,7 +43,7 @@ AthHistogramFilterAlgorithm::AthHistogramFilterAlgorithm( const std::string& nam
                   "ROOT objects to ROOT files" );
 
   //declareProperty("THistService",      m_histSvc, "The THistSvc" );
-  declareProperty("RootStreamName",    m_prefix  = "/", "Name of the output ROOT stream (file) that the THistSvc uses");
+  declareProperty("RootStreamName",    m_prefix  = "/ANALYSIS", "Name of the output ROOT stream (file) that the THistSvc uses");
   declareProperty("RootDirName",       m_rootDir = "",
                   "Name of the ROOT directory inside the ROOT file where the histograms will go");
 

Control/AthenaBaseComps/src/AthHistogramTool.cxx

@@ -41,7 +41,7 @@ AthHistogramTool::AthHistogramTool( const std::string& type,
                   "Handle to a THistSvc instance: it will be used to write "
                   "ROOT objects to ROOT files" );
 
-  declareProperty("RootStreamName",    m_prefix  = "/", "Name of the output ROOT stream (file) that the THistSvc uses");
+  declareProperty("RootStreamName",    m_prefix  = "/ANALYSIS", "Name of the output ROOT stream (file) that the THistSvc uses");
   declareProperty("RootDirName",       m_rootDir = "",
                   "Name of the ROOT directory inside the ROOT file where the histograms will go");