Upgrade WX to r74856, mainly to support @2x.

Externals/wxWidgets3/include/wx/accel.h

@@ -4,7 +4,6 @@
 // Author:      Julian Smart, Robert Roebling, Vadim Zeitlin
 // Modified by:
 // Created:     31.05.01 (extracted from other files)
-// RCS-ID:      $Id: accel.h 68718 2011-08-16 11:55:39Z SC $
 // Copyright:   (c) wxWidgets team
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
@@ -118,7 +117,12 @@ public:
     // returns a wxString for the this accelerator.
     // this function formats it using the <flags>-<keycode> format
     // where <flags> maybe a hyphen-separated list of "shift|alt|ctrl"
-    wxString ToString() const;
+    wxString ToString() const { return AsPossiblyLocalizedString(true); }
+
+    // same as above but without translating, useful if the string is meant to
+    // be stored in a file or otherwise stored, instead of being shown to the
+    // user
+    wxString ToRawString() const { return AsPossiblyLocalizedString(false); }
 
     // returns true if the given string correctly initialized this object
     // (i.e. if IsOk() returns true after this call)
@@ -126,6 +130,8 @@ public:
 
 
 private:
+    wxString AsPossiblyLocalizedString(bool localized) const;
+
     // common part of Create() and FromString()
     static bool ParseAccel(const wxString& str, int *flags, int *keycode);