Show txdb upgrade progress in debug log

src/txdb.cpp

@@ -369,7 +369,8 @@ bool CCoinsViewDB::Upgrade() {
     }
 
     int64_t count = 0;
-    LogPrintf("Upgrading database...\n");
+    LogPrintf("Upgrading utxo-set database...\n");
+    LogPrintf("[0%%]...");
     size_t batch_size = 1 << 24;
     CDBBatch batch(db);
     uiInterface.SetProgressBreakAction(StartShutdown);
@@ -383,6 +384,7 @@ bool CCoinsViewDB::Upgrade() {
             if (count++ % 256 == 0) {
                 uint32_t high = 0x100 * *key.second.begin() + *(key.second.begin() + 1);
                 uiInterface.ShowProgress(_("Upgrading UTXO database") + "\n"+ _("(press q to shutdown and continue later)") + "\n", (int)(high * 100.0 / 65536.0 + 0.5));
+                LogPrintf("[%d%%]...", (int)(high * 100.0 / 65536.0 + 0.5));
             }
             CCoins old_coins;
             if (!pcursor->GetValue(old_coins)) {
@@ -409,5 +411,6 @@ bool CCoinsViewDB::Upgrade() {
     }
     db.WriteBatch(batch);
     uiInterface.SetProgressBreakAction(std::function<void(void)>());
+    LogPrintf("[DONE].\n");
     return true;
 }