Extended options processing to handle --exclude, --force-tag, and --force-branch options. Extended project::sym class with in-memkory databases to hold the option information and replaced the 'UserConfig' placeholder with the actual code using the new databases to determine symbol types based on user-requests. Extended the pass itself with code performing various checks on the results of type determination, partially paranoia, partially to find genuine bad requests (excluding symbols with unexcluded blockers, making a symbol with commits on it a tag, ...). NYI: Computation of the prefered parent for all symbols.