banlist: add more banlist infos to log / add GUI signal

- to match the peers.dat handling also supply a debug.log entry for how
  many entries were loaded from banlist.dat and how long it took
- add a GUI init message for loading the banlist (same as with peers.dat)

- move the same message for peers.dat upwards in the code, to be able to
  reuse the timing variable nStart and also just log, if our read from
  peers.dat didn't fail

src/net.cpp

@@ -35,7 +35,7 @@
 #include <boost/filesystem.hpp>
 #include <boost/thread.hpp>
 
-// Dump addresses to peers.dat every 15 minutes (900s)
+// Dump addresses to peers.dat and banlist.dat every 15 minutes (900s)
 #define DUMP_ADDRESSES_INTERVAL 900
 
 #if !defined(HAVE_MSG_NOSIGNAL) && !defined(MSG_NOSIGNAL)
@@ -555,11 +555,13 @@ void CNode::SweepBanned()
     banmap_t::iterator it = setBanned.begin();
     while(it != setBanned.end())
     {
+        CSubNet subNet = (*it).first;
         CBanEntry banEntry = (*it).second;
         if(now > banEntry.nBanUntil)
         {
             setBanned.erase(it++);
             setBannedIsDirty = true;
+            LogPrint("net", "%s: Removed banned node ip/subnet from banlist.dat: %s\n", __func__, subNet.ToString());
         }
         else
             ++it;
@@ -1898,15 +1900,19 @@ void static Discover(boost::thread_group& threadGroup)
 void StartNode(boost::thread_group& threadGroup, CScheduler& scheduler)
 {
     uiInterface.InitMessage(_("Loading addresses..."));
-    // Load addresses for peers.dat
+    // Load addresses from peers.dat
     int64_t nStart = GetTimeMillis();
     {
         CAddrDB adb;
-        if (!adb.Read(addrman))
+        if (adb.Read(addrman))
+            LogPrintf("Loaded %i addresses from peers.dat  %dms\n", addrman.size(), GetTimeMillis() - nStart);
+        else
             LogPrintf("Invalid or missing peers.dat; recreating\n");
     }
 
-    //try to read stored banlist
+    uiInterface.InitMessage(_("Loading banlist..."));
+    // Load addresses from banlist.dat
+    nStart = GetTimeMillis();
     CBanDB bandb;
     banmap_t banmap;
     if (bandb.Read(banmap)) {
@@ -1923,7 +1929,7 @@ void StartNode(boost::thread_group& threadGroup, CScheduler& scheduler)
 
     if (semOutbound == NULL) {
         // initialize semaphore
-        int nMaxOutbound = min(MAX_OUTBOUND_CONNECTIONS, nMaxConnections);
+        int nMaxOutbound = std::min(MAX_OUTBOUND_CONNECTIONS, nMaxConnections);
         semOutbound = new CSemaphore(nMaxOutbound);
     }