[tlbuild] win32/mk4ht, etc

[Akira Kakuto]

Hi Vladimir,

>  AK> Both of them are necessary.  Sorry for the awkwardness.
> 
> maybe you can just rebuild all binaries with the latest kpathsea...

I'm using a very old compiler for almost all binaries,
because I feel it generates small and fast code.
For XeTeX, I'm using relatively new one, since the old one
cannot compile it. I found that the dlls are not compatible
between the two. So I'll not change the awkwardness, ... sorry.

Thanks,
Akira