Moved wxStandardPathsCF into base library when using CarbonLib or Darwin.

Make wxStandardPathsBase::Get() return a wxStandardPathsBase reference.
Implement it using wxAppTraits::GetStandardPaths() which is overridden by
wxMac and wxCocoa GUI libraries to return a reference to a wxStandardPathsCF.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@30506 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/unix/apptrait.h

@@ -37,6 +37,9 @@ public:
     virtual void DetachWriteFDOfEndProcessPipe(wxExecuteData& execData);
     virtual int WaitForChild(wxExecuteData& execData);
 
+#if defined(__WXMAC__) || defined(__WXCOCOA__)
+    virtual wxStandardPathsBase& GetStandardPaths();
+#endif
     virtual wxToolkitInfo& GetToolkitInfo();
 };