Re: Re-porting to FreeBSD 11-CURRENT(21.4.22)

I don't know whether this issue post this ML or not, I'm preparing to re-porting xemacs-21.4.22 of FreeBSD ports tree. Almost seems to be well to fit to the current ports system, but sevral problems exit to escape for committing. These are clasified by it's seriousness. To get out those with the order of priority: (1) fail to build by libpng16 Build failed in glyphs-eimage.c compile, because of referencing obsolete types of structures of libpng15. I've overcome to copy old libpng15 header files pngdebug.h, pnginfo.h, pngpriv.h and pngstruct.h to src directory. But this is too coercive to pass compiling. Could you compile glyphs-eimage.c with linpng16?