I have just added the new MakeMaker in the last release based in what Inline does. This was added to install the compiled XS in the Perl distribution.
I will look for a solution using the default MakeMaker.
But note that the prerequisite bug at CPAN really exists and is a common bug that reports a lot of wrong tests by the CPAN testers.
Graciliano M. P.
"Creativity is the expression of liberty".