Merge pull request #203 from melissaanne/master

Build for wheezy against static dep libraries
build for el 6

openssl-libs doesn't exist on el6, so we need to update that. We're also
updating dep reqs to make sure we're pulling in the most recent versions
of dependencies, that have the static pacakge available.

We're also adding in libcurl at build time so that we can enable that
functionality.