[Guidelines Change] Changes to the Packaging Guidelines

Here are the latest set of changes to the Fedora Packaging Guidelines:

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A new section has been added to the SysV Initscripts section, discussing
the proper use of subsys locking. Even though Fedora packages should no
longer be using SysV Initscripts as a primary service mechanism, Red Hat
Enterprise Linux and EPEL do. Additionally,
Red Hat points partners to the Fedora Guidelines when they build for RHEL.

https://fedoraproject.org/wiki/Packaging:SysVInitScript#Careful_Handling_of_.2Fvar.2Flock.2Fsubsys.2F.3Cservice_name.3E_mechanism

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The review guidelines now reflect the use of sha256sum (instead of
md5sum) to confirm upstream source integrity.

https://fedoraproject.org/wiki/Packaging:ReviewGuidelines#Things_To_Check_On_Review

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The PHP Packaging guidelines have been updated to include guidance about
when it is appropriate to have an explicit Requires on httpd & mod_php,
how to handle explicit Requires on PHP extensions, and how to handle a
Requires for a minimum PHP version.

https://fedoraproject.org/wiki/Packaging:PHP#Apache_requirement
https://fedoraproject.org/wiki/Packaging:PHP#Extensions_Requires
https://fedoraproject.org/wiki/Packaging:PHP#Requiring_a_Minimum_PHP_version