Revert 3a54cacb: "Add multiverse to [...]"

This reverts commit 3a54cacb7e4e414579678b198bba9bf369e98959.
Further zephyr discusssion suggested this is not a good idea.
Add a sources.list for saucy

Add a sources.list file for creating a saucy chroot
Quote variable in existence test

Thanks to a shell glob (which should die), $dir can contain more
than one path, which yields a syntax error unless $dir is quoted.
Add saucy to DEBIAN_CODES

Saucy initial build is complete, new packages should now
also be built for saucy.
Remove 0.1 tag for saucy

Saucy releases tomorrow, it's time to do the final build, so remove
the 0.1 tag.
Add tag for trusty

Ubuntu 14.04 will be named "Trusty Tahr", so add a tag for it.