Fix deprecation warning about Qt algorithms in tool xmlpatternsv5.13.0-alpha1

Use std::sort and implement operator< for class QApplicationArgument,
fixing:

qapplicationargumentparser.cpp:301:7: warning: ‘template<class T> class qLess’ is deprecated [-Wdeprecated-declarations]
                 from qapplicationargumentparser.cpp:29:
qapplicationargumentparser.cpp: In member function ‘void QApplicationArgumentParserPrivate::displayHelp() const’:
qapplicationargumentparser.cpp:337:15: warning: ‘void qSort(Container&) [with Container = QList<QApplicationArgument>]’ is deprecated: Use std::sort [-Wdeprecated-declarations]
                 from qapplicationargumentparser.cpp:29:
qapplicationargumentparser.cpp:356:19: warning: ‘void qSort(Container&) [with Container = QList<QApplicationArgument>]’ is deprecated: Use std::sort [-Wdeprecated-declarations]
                 from qapplicationargumentparser.cpp:29:

Change-Id: I63d8dd5a83f3478b2c70b5b288d9ddb3e5ad5a76
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 1 insertions, 0 deletions

diff --git a/tools/xmlpatterns/qapplicationargument_p.h b/tools/xmlpatterns/qapplicationargument_p.h
index acdd075..aef216b 100644
--- a/tools/xmlpatterns/qapplicationargument_p.h
+++ b/tools/xmlpatterns/qapplicationargument_p.h
@@ -57,6 +57,7 @@ public:
     ~QApplicationArgument();
     QApplicationArgument &operator=(const QApplicationArgument &other);
     bool operator==(const QApplicationArgument &other) const;
+    bool operator<(const QApplicationArgument &other) const;
 
     void setName(const QString &newName);
     QString name() const;