Use wx-prefixed macros throughout the repository.

Change {DECLARE,IMPLEMENT}_*CLASS and {DECLARE,BEGIN,END}_EVENT_TABLE
occurrences to use the wx-prefixed version of the macros.

include/wx/mstream.h

@@ -58,7 +58,7 @@ private:
     size_t m_length;
 
     // copy ctor is implemented above: it copies the other stream in this one
-    DECLARE_ABSTRACT_CLASS(wxMemoryInputStream)
+    wxDECLARE_ABSTRACT_CLASS(wxMemoryInputStream);
     wxDECLARE_NO_ASSIGN_CLASS(wxMemoryInputStream);
 };
 
@@ -83,7 +83,7 @@ protected:
     wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode) wxOVERRIDE;
     wxFileOffset OnSysTell() const wxOVERRIDE;
 
-    DECLARE_DYNAMIC_CLASS(wxMemoryOutputStream)
+    wxDECLARE_DYNAMIC_CLASS(wxMemoryOutputStream);
     wxDECLARE_NO_COPY_CLASS(wxMemoryOutputStream);
 };