auto-guess archive whatsins
 auto pick-up .bib files and convert them in post-processing
Fix searchpaths passing bug to Post::Document; citationraw now has .bib working
 (HACK) Turn nested bind_log/flush_log calls into no-ops
 more formal preparation of the sub-converter objects
 Zip regex was slightly off the mark
 using a package variable instead of $ENV
Merge pull request #472 from dginev/zip_workflow_bibs

Auto bib workflow for archives