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.

samples/stc/stctest.cpp

@@ -108,7 +108,7 @@ protected:
 };
 
 // created dynamically by wxWidgets
-DECLARE_APP (App);
+wxDECLARE_APP(App);
 
 //----------------------------------------------------------------------------
 //! frame of the application APP_VENDOR-APP_NAME.
@@ -190,7 +190,7 @@ private:
 // implementation
 //============================================================================
 
-IMPLEMENT_APP (App)
+wxIMPLEMENT_APP(App);
 
 
 wxBEGIN_EVENT_TABLE(App, wxApp)