Merge #16674: refactor: remove obsolete qt algorithm usage

153d9dd refactor: replace qLowerBound & qUpperBound with std:: upper_bound & lower_bound (fanquake)
59373e3 refactor: replace qSort with std::sort (fanquake)
fea33cb refactor: replace qStableSort with std::stable_sort (fanquake)

Pull request description:

  `qStablesort`, `qSort`, `qLowerBound` and `qUpperBound` have been marked as obsolete since at least Qt 5.9: [Obsolete Members for QtAlgorithms](https://doc.qt.io/qt-5.9/qtalgorithms-obsolete.html).

  This pull request replaces their usage with the suggested `std::` replacements.

  This also removes some warning spam when compiling against newer Qt (5.13.0 via brew):
  ```bash
    CXX      qt/libbitcoinqt_a-walletcontroller.o
  qt/transactiontablemodel.cpp:96:52: warning: 'qLowerBound<QList<TransactionRecord>::iterator, uint256, TxLessThan>' is deprecated: Use std::lower_bound [-Wdeprecated-declarations]
          QList<TransactionRecord>::iterator lower = qLowerBound(
  qt/transactiontablemodel.cpp:98:52: warning: 'qUpperBound<QList<TransactionRecord>::iterator, uint256, TxLessThan>' is deprecated: Use std::upper_bound [-Wdeprecated-declarations]
          QList<TransactionRecord>::iterator upper = qUpperBound(
  ```

  ```bash
    CXX      qt/libbitcoinqt_a-moc_walletcontroller.o
  qt/bantablemodel.cpp:64:13: warning: 'qStableSort<QList<CCombinedBan>::iterator, BannedNodeLessThan>' is deprecated: Use std::stable_sort [-Wdeprecated-declarations]
              qStableSort(cachedBanlist.begin(), cachedBanlist.end(), BannedNodeLessThan(sortColumn, sortOrder));
  ```

  ```bash
    CXX      qt/libbitcoinqt_a-sendcoinsentry.o
  qt/recentrequeststablemodel.cpp:205:5: warning: 'qSort<QList<RecentRequestEntry>::iterator, RecentRequestEntryLessThan>' is deprecated: Use std::sort [-Wdeprecated-declarations]
      qSort(list.begin(), list.end(), RecentRequestEntryLessThan(column, order));
  ```

ACKs for top commit:
  hebasto:
    ACK 153d9dd
  promag:
    ACK 153d9dd.
  jonasschnelli:
    utACK 153d9dd

Tree-SHA512: 22f7290ed798ce8b0f5f313405377845d4c8e48dc8687be7464e27fff53363b451a40e9e18910a8c3b4b9d4dcc236a366c92e7d171fcb8576c48f149a1886c26

Author: fanquake

src/qt/addresstablemodel.cpp

@@ -10,6 +10,8 @@
 #include <key_io.h>
 #include <wallet/wallet.h>
 
+#include <algorithm>
+
 #include <QFont>
 #include <QDebug>
 
@@ -86,18 +88,18 @@ class AddressTablePriv
                                   QString::fromStdString(EncodeDestination(address.dest))));
             }
         }
-        // qLowerBound() and qUpperBound() require our cachedAddressTable list to be sorted in asc order
+        // std::lower_bound() and std::upper_bound() require our cachedAddressTable list to be sorted in asc order
         // Even though the map is already sorted this re-sorting step is needed because the originating map
         // is sorted by binary address, not by base58() address.
-        qSort(cachedAddressTable.begin(), cachedAddressTable.end(), AddressTableEntryLessThan());
+        std::sort(cachedAddressTable.begin(), cachedAddressTable.end(), AddressTableEntryLessThan());
     }
 
     void updateEntry(const QString &address, const QString &label, bool isMine, const QString &purpose, int status)
     {
         // Find address / label in model
-        QList<AddressTableEntry>::iterator lower = qLowerBound(
+        QList<AddressTableEntry>::iterator lower = std::lower_bound(
             cachedAddressTable.begin(), cachedAddressTable.end(), address, AddressTableEntryLessThan());
-        QList<AddressTableEntry>::iterator upper = qUpperBound(
+        QList<AddressTableEntry>::iterator upper = std::upper_bound(
             cachedAddressTable.begin(), cachedAddressTable.end(), address, AddressTableEntryLessThan());
         int lowerIndex = (lower - cachedAddressTable.begin());
         int upperIndex = (upper - cachedAddressTable.begin());

src/qt/bantablemodel.cpp

@@ -10,6 +10,8 @@
 #include <sync.h>
 #include <util/time.h>
 
+#include <algorithm>
+
 #include <QDebug>
 #include <QList>
 
@@ -61,7 +63,7 @@ class BanTablePriv
 
         if (sortColumn >= 0)
             // sort cachedBanlist (use stable sort to prevent rows jumping around unnecessarily)
-            qStableSort(cachedBanlist.begin(), cachedBanlist.end(), BannedNodeLessThan(sortColumn, sortOrder));
+            std::stable_sort(cachedBanlist.begin(), cachedBanlist.end(), BannedNodeLessThan(sortColumn, sortOrder));
     }
 
     int size() const

src/qt/peertablemodel.cpp

@@ -11,6 +11,8 @@
 #include <interfaces/node.h>
 #include <sync.h>
 
+#include <algorithm>
+
 #include <QDebug>
 #include <QList>
 #include <QTimer>
@@ -76,7 +78,7 @@ class PeerTablePriv
 
         if (sortColumn >= 0)
             // sort cacheNodeStats (use stable sort to prevent rows jumping around unnecessarily)
-            qStableSort(cachedNodeStats.begin(), cachedNodeStats.end(), NodeLessThan(sortColumn, sortOrder));
+            std::stable_sort(cachedNodeStats.begin(), cachedNodeStats.end(), NodeLessThan(sortColumn, sortOrder));
 
         // build index map
         mapNodeRows.clear();

src/qt/recentrequeststablemodel.cpp

@@ -11,6 +11,8 @@
 #include <clientversion.h>
 #include <streams.h>
 
+#include <algorithm>
+
 
 RecentRequestsTableModel::RecentRequestsTableModel(WalletModel *parent) :
     QAbstractTableModel(parent), walletModel(parent)
@@ -202,7 +204,7 @@ void RecentRequestsTableModel::addNewRequest(RecentRequestEntry &recipient)
 
 void RecentRequestsTableModel::sort(int column, Qt::SortOrder order)
 {
-    qSort(list.begin(), list.end(), RecentRequestEntryLessThan(column, order));
+    std::sort(list.begin(), list.end(), RecentRequestEntryLessThan(column, order));
     Q_EMIT dataChanged(index(0, 0, QModelIndex()), index(list.size() - 1, NUMBER_OF_COLUMNS - 1, QModelIndex()));
 }
 

src/qt/transactiontablemodel.cpp

@@ -17,6 +17,8 @@
 #include <interfaces/handler.h>
 #include <uint256.h>
 
+#include <algorithm>
+
 #include <QColor>
 #include <QDateTime>
 #include <QDebug>
@@ -93,9 +95,9 @@ class TransactionTablePriv
         qDebug() << "TransactionTablePriv::updateWallet: " + QString::fromStdString(hash.ToString()) + " " + QString::number(status);
 
         // Find bounds of this transaction in model
-        QList<TransactionRecord>::iterator lower = qLowerBound(
+        QList<TransactionRecord>::iterator lower = std::lower_bound(
             cachedWallet.begin(), cachedWallet.end(), hash, TxLessThan());
-        QList<TransactionRecord>::iterator upper = qUpperBound(
+        QList<TransactionRecord>::iterator upper = std::upper_bound(
             cachedWallet.begin(), cachedWallet.end(), hash, TxLessThan());
         int lowerIndex = (lower - cachedWallet.begin());
         int upperIndex = (upper - cachedWallet.begin());