Restructured the gem5 backend:

- FailGem5Device is gone.
- There are now changes directly made to the gem5 source.
- Gem5Connector is a helper class that is compiled inside the gem5 context to workaround problems with gem5 header in fail.

Things that are working:
- BPSingleListener
- MemAccessListener
- Save and restore simulator state

git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1820 8c4709b5-6ec9-48aa-a5cd-a96041d1645a

src/core/sal/gem5/Gem5Connector.cc

@@ -0,0 +1,25 @@
+#include "Gem5Connector.hpp"
+
+#include "base/trace.hh"
+#include "debug/FailState.hh"
+#include "sim/root.hh"
+
+Gem5Connector connector;
+
+void Gem5Connector::save(const std::string &path)
+{
+	DPRINTF(FailState, "Saving state to %s.\n", path);
+
+	Root* root = Root::root();
+	root->Serializable::serializeAll(path);
+}
+
+void Gem5Connector::restore(const std::string &path)
+{
+	DPRINTF(FailState, "Restoring state from %s.\n", path);
+
+	Root* root = Root::root();
+	Checkpoint cp(path);
+
+	root->loadState(&cp);
+}