Fix build with GCC 11: include <limits>

Keith Kyzivat: Cherry-picked from change-id listed below, but also
includes manual fixes/changes necessary for Qt 5.15 that were not needed
in Qt6 (dev branch that this came from)

Fixes Maya: MAYA-125068

Fixes: QTBUG-90395
Change-Id: Iecc74d2000eb40dfbe7bfffd165b5dd3708b7a40

Author: thiagomacieira

src/corelib/global/qendian.h

@@ -1,7 +1,7 @@
 /****************************************************************************
 **
-** Copyright (C) 2016 The Qt Company Ltd.
-** Copyright (C) 2016 Intel Corporation.
+** Copyright (C) 2021 The Qt Company Ltd.
+** Copyright (C) 2021 Intel Corporation.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the QtCore module of the Qt Toolkit.
@@ -44,6 +44,8 @@
 #include <QtCore/qfloat16.h>
 #include <QtCore/qglobal.h>
 
+#include <limits>
+
 // include stdlib.h and hope that it defines __GLIBC__ for glibc-based systems
 #include <stdlib.h>
 #include <string.h>

src/corelib/global/qfloat16.h

@@ -43,6 +43,7 @@
 
 #include <QtCore/qglobal.h>
 #include <QtCore/qmetatype.h>
+#include <limits>
 #include <string.h>
 
 #if defined(QT_COMPILER_SUPPORTS_F16C) && defined(__AVX2__) && !defined(__F16C__)

src/corelib/text/qbytearraymatcher.h

@@ -41,6 +41,7 @@
 #define QBYTEARRAYMATCHER_H
 
 #include <QtCore/qbytearray.h>
+#include <limits>
 
 QT_BEGIN_NAMESPACE
 

src/corelib/tools/qoffsetstringarray_p.h

@@ -55,6 +55,7 @@
 
 #include <tuple>
 #include <array>
+#include <limits>
 
 QT_BEGIN_NAMESPACE