CLAM deployment.

Now it is still difficult to install and use CLAM. We are heading toward a more usable environment by:

• Removing dependencies with third party libraries when not strictly necessary. Now, especially in GNU/Linux, you need to have all third party libraries installed in your system even though you are never going to use some of them. This issue should be solved in next releases.
• Devising a better package structure. Now we have very few namespaces/packages. The idea is to clearly identify more or less independent components and group them into understandable packages such as CLAM::Base, CLAM::ProcessingRepository, CLAM::SMS, etc...
• Distributing Binaries. The compile time and deployment would greatly benefit from having binary packages of the framework.