GDB: Always read init scripts after python dumpers

If the user overrides a dumper function (e.g. threadnames), it is
not overridden when the target is a core dump, because the python
dumpers are re-read after loading the init scripts.

Change-Id: I8740228e754a4ed96352188bdfa4ffec95cdeaa0
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/debugger/gdb/gdbengine.h

@@ -270,6 +270,7 @@ private: ////////// Gdb Process Management //////////
 
     void handleAdapterStarted();
     void defaultInferiorShutdown(const char *cmd);
+    void loadInitScript();
     void loadPythonDumpers();
     void pythonDumpersFailed();