simplify not eq to ne
tests failed to account for the lack of skip_all on MSWin32

e.g.
http://www.cpantesters.org/cpan/report/8437df02-6bfa-1014-a545-bb1c6ee5f1f3
Dist-Zilla-Plugin-Test-Compile-2.051

 - fix needs_display tests failing on MSWin32 since 2.048