Update wxWidgets to 3.1.0

From wxWidgets master 81570ae070b35c9d52de47b1f14897f3ff1a66c7.

include/wx/defs.h -- __w64 warning disable patch by comex brought forward.

include/wx/msw/window.h -- added GetContentScaleFactor() which was not implemented on Windows but is necessary for wxBitmap scaling on Mac OS X so it needs to work to avoid #ifdef-ing the code.

src/gtk/window.cpp -- Modified DoSetClientSize() to direct call wxWindowGTK::DoSetSize() instead of using public wxWindowBase::SetSize() which now prevents derived classes (like wxAuiToolbar) intercepting the call and breaking it. This matches Windows which does NOT need to call DoSetSize internally. End result is this fixes Dolphin's debug tools toolbars on Linux.

src/osx/window_osx.cpp -- Same fix as for GTK since it has the same issue.

src/msw/radiobox.cpp -- Hacked to fix display in HiDPI (was clipping off end of text).

Updated CMakeLists for Linux and Mac OS X. Small code changes to Dolphin to fix debug error boxes, deprecation warnings, and retain previous UI behavior on Windows.

Externals/wxWidgets3/include/wx/headerctrl.h

@@ -160,12 +160,12 @@ public:
     // -------------------------------
 
     // the user doesn't need to TAB to this control
-    virtual bool AcceptsFocusFromKeyboard() const { return false; }
+    virtual bool AcceptsFocusFromKeyboard() const wxOVERRIDE { return false; }
 
     // this method is only overridden in order to synchronize the control with
     // the main window when it is scrolled, the derived class must implement
     // DoScrollHorz()
-    virtual void ScrollWindow(int dx, int dy, const wxRect *rect = NULL);
+    virtual void ScrollWindow(int dx, int dy, const wxRect *rect = NULL) wxOVERRIDE;
 
 protected:
     // this method must be implemented by the derived classes to return the
@@ -211,7 +211,7 @@ protected:
 
 protected:
     // this window doesn't look nice with the border so don't use it by default
-    virtual wxBorder GetDefaultBorder() const { return wxBORDER_NONE; }
+    virtual wxBorder GetDefaultBorder() const wxOVERRIDE { return wxBORDER_NONE; }
 
 private:
     // methods implementing our public API and defined in platform-specific
@@ -232,7 +232,7 @@ private:
     void OnRClick(wxHeaderCtrlEvent& event);
 #endif // wxUSE_MENUS
 
-    DECLARE_EVENT_TABLE()
+    wxDECLARE_EVENT_TABLE();
 };
 
 // ----------------------------------------------------------------------------
@@ -331,8 +331,8 @@ public:
 
 protected:
     // implement/override base class methods
-    virtual const wxHeaderColumn& GetColumn(unsigned int idx) const;
-    virtual bool UpdateColumnWidthToFit(unsigned int idx, int widthTitle);
+    virtual const wxHeaderColumn& GetColumn(unsigned int idx) const wxOVERRIDE;
+    virtual bool UpdateColumnWidthToFit(unsigned int idx, int widthTitle) wxOVERRIDE;
 
     // and define another one to be overridden in the derived classes: it
     // should return the best width for the given column contents or -1 if not
@@ -405,7 +405,7 @@ public:
     unsigned int GetNewOrder() const { return m_order; }
     void SetNewOrder(unsigned int order) { m_order = order; }
 
-    virtual wxEvent *Clone() const { return new wxHeaderCtrlEvent(*this); }
+    virtual wxEvent *Clone() const wxOVERRIDE { return new wxHeaderCtrlEvent(*this); }
 
 protected:
     // the column affected by the event
@@ -418,7 +418,7 @@ protected:
     unsigned int m_order;
 
 private:
-    DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxHeaderCtrlEvent)
+    wxDECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxHeaderCtrlEvent);
 };