* [TravisCI] Set up for parallel Travis builds and use Qt5.7 (with option of selecting version). commit-tests.sh script can now optionally build one, all, or sets of targets. * [TravisCI] Move "COMPANION" build to first slot and rename to "DEFAULT". * [TravisCI] Fix "ALL" build flavor, remove TARANIS flavor, rename HORUS to X12, streamline some code, add comments, fix indents.