The changes:

* merged most of Seppo's changes by hand
 * enabled the replay of SR speedup feature
 * changed how binlog_cache is retrieved for SR speedup
 * moved set_fragments_from_table() to
   Wsrep_schema::recover_sr_transactions()
 * improved handling the "wsrep_is_sr" flags

Several MTR tests still fail, for example galera_sr.GCF-900

include/wsrep/client_service.hpp

@@ -217,6 +217,14 @@ namespace wsrep
          * been enabled.
          */
         virtual void debug_crash(const char* crash_point) = 0;
+
+#ifdef WITH_WSREP_SR_SPEEDUP
+	/**
+	 * Return the binlog cache for the currently execution
+	 * transaction or a NULL pointer if no such cache exists.
+	 */
+	virtual void *get_binlog_cache() = 0;
+#endif /* WITH_WSREP_SR_SPEEDUP */
     };
 }
 

include/wsrep/storage_service.hpp

@@ -67,7 +67,8 @@ namespace wsrep
                                     const wsrep::const_buffer& data,
 #ifdef WITH_WSREP_SR_SPEEDUP_REPLAY
 				    size_t offset,
-                                    const wsrep::xid& xid, void * current_thd) = 0;
+                                    const wsrep::xid& xid,
+				    void *binlog_cache) = 0;
 #else
                                     const wsrep::xid& xid) = 0;
 #endif /* WITH_WSREP_SR_SPEEDUP_REPLAY */

include/wsrep/transaction.hpp

@@ -144,6 +144,7 @@ namespace wsrep
         int xa_replay(wsrep::unique_lock<wsrep::mutex>&);
 #ifdef WITH_WSREP_SR_SPEEDUP
 	int set_fragments_from_table();
+	void *get_binlog_cache();
 #endif /* WITH_WSREP_SR_SPEEDUP */
 
         bool pa_unsafe() const { return pa_unsafe_; }