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/generic/filepickerg.h

@@ -156,7 +156,7 @@ protected:
         { m_path = wxStaticCast(p, wxFileDialog)->GetPath(); }
 
 private:
-    DECLARE_DYNAMIC_CLASS(wxGenericFileButton)
+    wxDECLARE_DYNAMIC_CLASS(wxGenericFileButton);
 };
 
 
@@ -211,7 +211,7 @@ protected:
         { m_path = wxStaticCast(p, wxDirDialog)->GetPath(); }
 
 private:
-    DECLARE_DYNAMIC_CLASS(wxGenericDirButton)
+    wxDECLARE_DYNAMIC_CLASS(wxGenericDirButton);
 };
 
 // old wxEVT_COMMAND_* constants