BibDocFile: no access to filesystem
BibDocFile: no access to filesystem

* Does no longer access filesystem when what
  is required is only to initialize a BibDoc
  and CFG_BIBDOCFILE_ENABLE_BIBDOCFSINFO_CACHE
  is used.

inveniosoftware/invenio,inveniosoftware/invenio,tiborsimko/invenio,tiborsimko/invenio