(travis) Multiple fixups to the CI lifted from blead:
- Much lighter CI runs when smoking a PR
- Revert backout of ODBC firebird testing
aa0e82a2
- Restore and enhance post-success to run a full CPAN install cycle
- Cut down the amount of APT repos during updates
- *FINALLY* remove Module::Build::Tiny front-loading
- Double check M::B::T is not pulled in
- Peg Module::Install - new versions deps on autodie, which is 5.8.4+
- Enhance perl sterilization to somewhat work on < 5.12 as well
- Correctly detect CI on github forks
- Improve the "Did it really install?" check
- Better shuffling of the prereq installation order
- Fix silencer changes (
f8200928) which were practically undone by 8b60b921