Split SharedLibrary functionality out of ClassLoader to ensure one loadLibrary function call

[okkenator]

When ClassLoader is used for multiple Manifests, the SharedLibrary is created more than once causing pocoInitializeLibrary to be called more than once from a single application.

The _map in ClassLoader in not common across the different manifest files due to template instantiations. I think a SharedLibraryLoader can be utilized that is used for each ClassLoader.

I have a prototype of this change I am working on and would like to contribute it.