Test merged with fixes (parallel testing bug fix)

I forked from frioux's  fork of haarg's fork, which is nearly a year old. I pulled in the changes you have made since then, changed some of the .travis.yml stuff, and the resulting travis tests passed. 

https://travis-ci.org/ugexe/perl-Archive-Zip/builds/38659143
https://coveralls.io/r/ugexe/perl-Archive-Zip

I believe haarg's commits fix CPAN rts 91547, 57120, 91245