Merge branch '2.6.x' into 2.7.x
- 2.6.x: (maint) Cleanup and strengthen acceptance tests (#7144) Update Settings#writesub to convert mode to Fixnum (maint) Fix platform dection for RHEL
Manually Resolved Conflicts:
acceptance/tests/ticket_5477_master_not_dectect_sitepp.rb
spec/unit/util/settings_spec.rb