travis: fixup previous commit
travis: remove apt-get upgrade
travis: delete
travis: make a homebrew-based build
travis: configure deployment with "travis setup release"
travis: use homebrew only for dependencies, then use scons

This avoids cloning master repo and uses this branch instead.
travis: add troubleshooting
travis: troubleshoot env, set gettextdir = brew --prefix gettext
travis: fiddle with deploy

replace branch choice with "all_branches: true", this yaml only
affects a single branch anyways
travis: fiddle with deployment, automatically tag this commit
travis: don't fetch tags, its slow
travis: revert automatic tagging
travis: fiddle with yaml, add fetch --tags again
travis: troubleshoot "error no entity (wesnoth not found)"
travis: skip cleanup
travis: fiddle with settings to reduce build time
travis: remove fetch --tags
travis: fetch specific tag
travis: fixup
travis: add irc notification