Lots of Unix/Unicode compile fixes, some of which

are just #ifdef 0 such as the wxExecute calls
    in gdcps.cpp.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@16375 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/html/helpdata.cpp

@@ -29,6 +29,8 @@
     #include "wx/log.h"
 #endif
 
+#include <ctype.h>
+
 #include "wx/html/helpdata.h"
 #include "wx/tokenzr.h"
 #include "wx/wfstream.h"