Bug 1283612 - Add Bugzilla::Extension module loader last
r=dkl

Currently, anything that is loaded after the bugzilla extensions
are loaded has to search through each callback inserted into @INC
by Bugzilla::Extension. If you have a lot of extensions this is slow.

It is harmless to search for Bugzilla::Extension::* modules last, so
we replace the unshift with a push.

Bug 1274764 - Increasing memcached performance is possible because Cache::Memcached::Fast does not need detainting
r=dkl,a=dylan

r=dylan

r=dkl

r=dylan

r=dkl

r=dylan

r/a=dkl

r=dylan

Bug 1261114 - Release notes cannot be displayed due to missing REQUIRED_MODULES and OPTIONAL_MODULES
r=dylan

r=LpSolit

r=LpSolit

r=dkl

Bug 1250114 - XSS possible in extensions calling global/tabs.html.tmpl if tab.link is user-controlled

r=dkl

r=dylan

r=dylan

Bug 1251100 - checksetup.pl no longer tells admins which modules are installed and which version is installed

r=dkl

r=dylan

Bug 1268989 - Inefficient check of "Bugzilla_api_token" might lead to CSRF/data disclosure vulnerability in Bugzilla's REST API
r=dkl

Add build.platform = linux64, machine.platform = linux64 to taskgraph.json to remove b2gtest from Treeherder results

Bug 1269252 - Using callback parameter with REST API causes read-only accessor error in Bugzilla/API/Server.pm
r=dylan

Bug 1268174 - [PostgreSQL] $dbh->bz_add_column() fails to create new columns with the NOT NULL constraint if there is no DEFAULT value
r=gerv

Bug 1268146 - profiles.email is set back to match profiles.login_name every time checksetup.pl is run
r=gerv