Add progress to initial display of latest block downloaded.

src/main.cpp

@@ -2743,9 +2743,10 @@ bool static LoadBlockIndexDB()
     if (it == mapBlockIndex.end())
         return true;
     chainActive.SetTip(it->second);
-    LogPrintf("LoadBlockIndexDB(): hashBestChain=%s  height=%d date=%s\n",
+    LogPrintf("LoadBlockIndexDB(): hashBestChain=%s height=%d date=%s progress=%f\n",
         chainActive.Tip()->GetBlockHash().ToString(), chainActive.Height(),
-        DateTimeStrFormat("%Y-%m-%d %H:%M:%S", chainActive.Tip()->GetBlockTime()));
+        DateTimeStrFormat("%Y-%m-%d %H:%M:%S", chainActive.Tip()->GetBlockTime()),
+        Checkpoints::GuessVerificationProgress(chainActive.Tip()));
 
     return true;
 }