[Fedora-packaging] [Guidelines Change] Change to the Packaging Guidelines

A few minor changes to the Fedora Packaging Guidelines have been made: --- The Ruby Packaging guidelines were updated to reflect the fact that rubygem packages must have a Requires: rubygems, because that package (rubygems) owns the RubyGems? directory structure. https://fedoraproject.org/wiki/Packaging:Ruby#RubyGems --- The systemd Scriptlets for Fedora 18+ have had their corresponding scriptlet Requires adjusted from "systemd-units" to "systemd", since "systemd-units" is provided by the "systemd" package in Fedora 18+. There is still a separation in previous releases of Fedora (16/17), so packagers can choose to continue using the old Requires (systemd-units) if they are targeting multiple versions of Fedora with a single spec file. https://fedoraproject.org/wiki/Packaging:ScriptletSnippets#Macroized_scri... --- This guideline change was approved by the Fedora Packaging Committee (FPC). Many thanks to Vit Ondruch, Lennart Poettering, and all of the members of the FPC, for assisting in drafting, refining, and passing these guidelines. As a reminder: The Fedora Packaging Guidelines are living documents! If you find something missing, incorrect, or in need of revision, you can suggest a draft change. The procedure for this is documented here: https://fedoraproject.org/wiki/Packaging/Committee#GuidelineChangeProcedure Thanks, ~tom