Merge pull request #15 from dimitry42/master

fixes for uninitiated field for cql_client_pool_impl_t
Updated to latest released versions of each
Merge pull request #21 from davidfetter/master

Old versions of zlib and openssl replaced with new ones.
closes #22, some linux distros want to install to lib64 instead of /usr/lib
Merge branch 'master' of github.com:mstump/libcql
version bump to 0.6