Replaced Ok() occurrences with IsOk() throughout trunk.

Additionally renamed wxOSX' private wxNativePrinterDC::Ok() function to IsOk().

Didn't deprecate the various Ok() functions: given the amount of changes already introduced in 3.0 a trivial one like this seems more suitable for after 3.0.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67681 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/widgets/statbmp.cpp

@@ -122,7 +122,7 @@ void StatBmpWidgetsPage::RecreateWidget()
         return;
 
     wxImage image(filepath);
-    if (! image.Ok() )
+    if (! image.IsOk() )
     {
         wxLogMessage("Reading image from file '%s' failed.", filepath.c_str());
         return;