debugger: merge gdb engine and symbian engine.

The trk parts are an 'adapter' in the gdb engine.

src/plugins/debugger/gdb/gdbengine.h

@@ -65,6 +65,10 @@ class GdbMi;
 class WatchData;
 class BreakpointData;
 
+class PlainGdbAdapter;
+class TrkGdbAdapter;
+class RemoteGdbAdapter;
+
 enum DebuggingHelperState
 {
     DebuggingHelperUninitialized,
@@ -80,7 +84,6 @@ class GdbEngine : public IDebuggerEngine
 public:
     explicit GdbEngine(DebuggerManager *parent);
     ~GdbEngine();
-    void setGdbAdapter(AbstractGdbAdapter *adapter);
 
 signals:
     void gdbInputAvailable(int channel, const QString &msg);
@@ -155,7 +158,8 @@ private:
     bool supportsThreads() const;
     void gotoLocation(const StackFrame &frame, bool setLocationMarker);
 
-    void initializeConnections();
+    void connectAdapter();
+    void disconnectAdapter();
     void initializeVariables();
     QString fullName(const QString &fileName);
     // get one usable name out of these, try full names first
@@ -439,8 +443,16 @@ private:
     DebuggerStartParametersPtr m_startParameters;
     // make sure to re-initialize new members in initializeVariables();
 
+    // only one of those is active at a given time
+    PlainGdbAdapter *m_plainAdapter;
+    TrkGdbAdapter *m_trkAdapter;
+    RemoteGdbAdapter *m_remoteAdapter;
+    
 public:
+    void showMessageBox(int icon, const QString &title, const QString &text);
     void debugMessage(const QString &msg);
+    void addOptionPages(QList<Core::IOptionsPage*> *opts) const;
+
     OutputCollector m_outputCollector;
 };