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, 5 insertions, 0 deletions

diff --git a/tools/xmlpatterns/qapplicationargument.cpp b/tools/xmlpatterns/qapplicationargument.cpp
index 92a8e9e..c0b672d 100644
--- a/tools/xmlpatterns/qapplicationargument.cpp
+++ b/tools/xmlpatterns/qapplicationargument.cpp
@@ -151,6 +151,11 @@ bool QApplicationArgument::operator==(const QApplicationArgument &other) const
     return name() == other.name();
 }
 
+bool QApplicationArgument::operator<(const QApplicationArgument &other) const
+{
+    return name() < other.name();
+}
+
 /*!
   \fn qHash(const QApplicationArgument &);
   \internal