wxgtk incompatible with stlport

[Guy Middleton]

On Sun, Sep 14, 2003 at 08:08:29PM -0400, Guy Middleton wrote:
> It compiles cleanly without stlport.
> 
> I tried to find the cause, but I quickly became lost in a twisty maze of
> #include files.

I think the way to fix this is for stlport to #include wchar.h depending on
the version of FreeBSD.

When did wchar.h first appear in FreeBSD, and what is the correct way to
construct an #ifdef for this?