SGSubsystemGroup: Removal of the subsystem group naming.

This is a partial reversion of 5253215065, the
changes of which are incompatible with the subsystem class IDs.

src/Autopilot/autopilot.cxx

@@ -115,7 +115,6 @@ void readInterfaceProperties( SGPropertyNode_ptr prop_root,
 static ComponentForge componentForge;
 
 Autopilot::Autopilot( SGPropertyNode_ptr rootNode, SGPropertyNode_ptr configNode ) :
-  SGSubsystemGroup("Autopilot"),
   _name("unnamed autopilot"),
   _serviceable(true),
   _rootNode(rootNode)

src/Autopilot/autopilotgroup.hxx

@@ -38,7 +38,7 @@ public:
     virtual void removeAutopilot( const std::string & name ) = 0;
 
 protected:
-    FGXMLAutopilotGroup() : SGSubsystemGroup("FGXMLAutopilotGroup") {}
+    FGXMLAutopilotGroup() : SGSubsystemGroup() {}
 };
 
 #endif // _XMLAUTO_HXX

src/Cockpit/cockpitDisplayManager.cxx

@@ -42,7 +42,6 @@ namespace flightgear
 {
 
 CockpitDisplayManager::CockpitDisplayManager () 
-    : SGSubsystemGroup("CockpitDisplayManager") 
 {
 }
 

src/Environment/environment_mgr.cxx

@@ -80,7 +80,6 @@ void FG3DCloudsListener::valueChanged( SGPropertyNode * node )
 }
 
 FGEnvironmentMgr::FGEnvironmentMgr () :
-    SGSubsystemGroup("FGEnvironmentMgr"),
   _environment(new FGEnvironment()),
   fgClouds(nullptr),
   _cloudLayersDirty(true),

src/Environment/terrainsampler.hxx

@@ -30,7 +30,6 @@ namespace Environment {
 class TerrainSampler : public SGSubsystemGroup
 {
 public:
-    TerrainSampler() : SGSubsystemGroup("TerrainSampler") {}
     static TerrainSampler * createInstance( SGPropertyNode_ptr rootNode );
 };
 

src/Input/input.cxx

@@ -57,7 +57,7 @@
 ////////////////////////////////////////////////////////////////////////
 
 
-FGInput::FGInput () : SGSubsystemGroup("FGInput")
+FGInput::FGInput ()
 {
   if( fgGetBool("/sim/input/no-mouse-input",false) ) {
     SG_LOG(SG_INPUT,SG_ALERT,"Mouse input disabled!");

src/Instrumentation/instrument_mgr.cxx

@@ -49,7 +49,6 @@
 #include "tcas.hxx"
 
 FGInstrumentMgr::FGInstrumentMgr () :
-  SGSubsystemGroup("FGInstrumentMgr"),
   _explicitGps(false)
 {    
 }

src/Main/globals.cxx

@@ -144,7 +144,7 @@ FGGlobals *globals = NULL;
 // Constructor
 FGGlobals::FGGlobals() :
     renderer( new FGRenderer ),
-    subsystem_mgr( new SGSubsystemMgr("subsystem_mgr") ),
+    subsystem_mgr( new SGSubsystemMgr ),
     event_mgr( new SGEventMgr ),
     sim_time_sec( 0.0 ),
     fg_root( "" ),

src/Systems/system_mgr.cxx

@@ -28,7 +28,7 @@
 #include "vacuum.hxx"
 
 
-FGSystemMgr::FGSystemMgr () :SGSubsystemGroup("FGSystemMgr")
+FGSystemMgr::FGSystemMgr ()
 {
     SGPropertyNode_ptr config_props = new SGPropertyNode;