No real changes, just refactor wxEventLoop/wxApp::ProcessIdle().
Old code called wxApp::ProcessIdle() from wxEventLoopManualRun::Run() which called wxEventLoop::ProcessIdle() which called wxApp methods from it. In the new version wxEventLoopManualRun::Run() calls wxEventLoopManualRun::ProcessIdle() which calls wxApp::ProcessIdle() which calls other wxApp methods which seems to make more sense and also allows overriding ProcessIdle() in either wxEventLoopManual or wxApp-derived classes.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@61441
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