Fix 79061be1 not working under -T
Run travis-prove under taint mode
Disable perl introduced in ced296a8 until fixed Carp.pm is shipped

https://rt.cpan.org/Public/Bug/Display.html?id=88531
MOAR workarounds - freeze CMM at a usable version

The dzil conversion introduced dependency on MBT which is extremely
hard to get going on older perls, left alone all dists made with it

Hopefully it will get fixed:
https://rt.cpan.org/Ticket/Display.html?id=88641