ports/183305: some perl5 modules with .xs components fail to install/package

[Zverev Andrey]

I think this can be related to latest ExtUtils::MakeMaker update.
In changelog (but it can be unrelated):

6.79_03 Fri Oct 11 13:56:53 BST 2013
    Bug fixes:
    * don't copy .bs portably :)

6.79_02 Fri Oct 11 12:58:01 BST 2013
    Bug fixes:
    * RT#28992 don't copy .bs files if they are empty


sunpoet@ can you look at this? Since old EU::MM allow empty and new one don't. And we have EU::MM in core and in ports.