I actually think we need to create 2 different version blocks for `1.0.1c` and `1.0.1f`. We should then set the default version based on platform:

```ruby
if platform == 'aix'
  default_version = '1.0.1c'
else
  default_vesion = '1.0.1f'
end

version '1.0.1c' do
  source :md5 => 'ae412727c8c15b67880aef7bd2999b2e'
end

version '1.0.1f' do
  source :md5 => 'f26b09c028a0541cab33da697d522b25'
end

source :url => "http://www.openssl.org/source/openssl-#{version}.tar.gz"
```