Fixing Travis scripts

[octonato]

No description provided.

[dwijnand]

Don't set -e. Trying to find how to source travis_terminate.

[ignasi35]

@renatocaval this is only a format away from complete :-)

[octonato]

Don't set -e

@dwijnand, can you explain why? That's how we do in most of our builds.

[octonato]

If that's the reason http://mywiki.wooledge.org/BashFAQ/105, I still think for our case it's much simpler to use set -e then adding || exit 1 everywhere.

Do you have any other reason for that?

[octonato]

Superseded by #293