first cut scripts to engage travis ci
whitespace
[travis] fix config with correct mirage unix backends
whitespace
[travis] add common package dependencies
[dns] commit missing non-generated Makefile
[git] update gitignore
Merge branch 'master' of git://github.com/mirage/mirage-skeleton
Merge branch 'master' into add-travis-ci

Conflicts:
	.travis-ci.sh
	.travis.yml