Added a noDefaultRepos() option that can be used to prevent the automatic adding of the default configured repositories (like local, user, global, remote and other) (see ceylon/ceylon-runtime#42)
Added support for the new `--no-default-repositories` option to all repo using tools (see ceylon/ceylon-runtime#42)
Fixed getDisplayString() to properly show the cache repository
Fixed debug message wrongly suggesting we didn't find a result in certain circumstances