Port from qAsConst() to std::as_const()

We've been requiring C++17 since Qt 6.0, and our qAsConst use finally
starts to bother us (QTBUG-99313), so time to port away from it
now.

Since qAsConst has exactly the same semantics as std::as_const (down
to rvalue treatment, constexpr'ness and noexcept'ness), there's really
nothing more to it than a global search-and-replace, with manual
unstaging of the actual definition and documentation in dist/,
src/corelib/doc/ and src/corelib/global/.

Task-number: QTBUG-99313
Change-Id: I4c7114444a325ad4e62d0fcbfd347d2bbfb21541
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/manual/highdpi/kitchensink/main.cpp b/tests/manual/highdpi/kitchensink/main.cpp
index 861707e6b9..fcc9af7928 100644
--- a/tests/manual/highdpi/kitchensink/main.cpp
+++ b/tests/manual/highdpi/kitchensink/main.cpp
@@ -1433,7 +1433,7 @@ int main(int argc, char **argv)
     demoList << new DemoContainer<GraphicsViewCaching>("graphicsview", "Test QGraphicsView caching");
     demoList << new DemoContainer<MetricsTest>("metrics", "Show screen metrics");
 
-    for (DemoContainerBase *demo : qAsConst(demoList))
+    for (DemoContainerBase *demo : std::as_const(demoList))
         parser.addOption(demo->option());
 
     parser.process(app);