I use `=encoding utf-8` line in POD, but after I make install, all the unicode charaters in the manual file is 'X'. I can use `pod2man -u file` to get the right manual, but I don't down how tu pass the arg to Pod::Man via Makefile.PL. I want to create a manual file contains utf-8 charaters via MakeMaker but I don't kown how.
