Redmine#5358: minor adjustment to set_line_based
Merge pull request #185 from tzz/redmine-5358-no-duplicates

Redmine#5358: minor adjustment to set_line_based
lib/3.6/files.cf: add EXTRA class and mention bundle name
lib/3.6/reports.cf: @brief needs empty line after
Redmine#5339: make inventory-specific APT and Yum package updaters