Trk/S60: Wire debugger parameters.

Remove conditionals from toolchain enumeration, pass parameters to
TrkGdbAdapter, rename function in runconfig, derive symbol
file from local exe file.

src/plugins/debugger/debuggermanager.h

@@ -110,6 +110,7 @@ public:
     // for remote debugging
     QString remoteChannel;
     QString remoteArchitecture;
+    QString symbolFileName;
     QString serverStartScript;
     int toolChainType;