Use the format field instead of version field

apps/openmw/mwstate/statemanagerimp.cpp

@@ -216,11 +216,10 @@ void MWState::StateManager::saveGame (const std::string& description, const Slot
             ++iter)
             writer.addMaster (*iter, 0); // not using the size information anyway -> use value of 0
 
-        writer.setFormat (ESM::Header::CurrentFormat);
-
-        writer.setVersion(1);
+        writer.setFormat (ESM::SavedGame::sCurrentFormat);
 
         // all unused
+        writer.setVersion(0);
         writer.setType(0);
         writer.setAuthor("");
         writer.setDescription("");

components/esm/objectstate.cpp

@@ -6,7 +6,7 @@
 
 void ESM::ObjectState::load (ESMReader &esm)
 {
-    mVersion = esm.getVer();
+    mVersion = esm.getFormat();
 
     mRef.loadData(esm);
 

components/esm/savedgame.cpp

@@ -6,6 +6,7 @@
 #include "defs.hpp"
 
 unsigned int ESM::SavedGame::sRecordId = ESM::REC_SAVE;
+int ESM::SavedGame::sCurrentFormat = 1;
 
 void ESM::SavedGame::load (ESMReader &esm)
 {

components/esm/savedgame.hpp

@@ -15,6 +15,8 @@ namespace ESM
     {
         static unsigned int sRecordId;
 
+        static int sCurrentFormat;
+
         struct TimeStamp
         {
             float mGameHour;