Check for unzip before attempting to build.
Merge branch 'master' of https://github.com/timfel/metatracing_vms_experiment into timfel-master
bash doesn't always live in /bin/
Remove a few stray "-q"s left over from Tim's changes.

Should be no functional change.
Reformat to 76 characters.
Update the VMs to the latest available versions.
Topasz doesn't yet work on enough benchmarks to be enabled by default.
Add Javascript and V8 to the benchmarking suite.
whitelist benchmarks that work on topaz, add an option to run all benchmarks for a particular language