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

src/common/zipstrm.cpp

@@ -1341,7 +1341,7 @@ void wxZipInputStream::Init(const wxString& file)
     ffile = static_cast<wxFFileInputStream*>(m_parent_i_stream);
     wxZipEntryPtr_ entry;
 
-    if (ffile->Ok()) {
+    if (ffile->IsOk()) {
         do {
             entry.reset(GetNextEntry());
         }