Build 1

• (TB Drivers) Ship the l10n milestone
• (TB Drivers) Submit to Ship It
• Push to mirrors
• Publish in Balrog
• Post-release tasks

Issues

• repack_1/10 failed for Thunderbird 38.7.2 build1 on win32. Looks like a malformed build machine, it couldn't do any uploads. Same machine as win32 repack 4/10. Rerun by nthomas.
• Ready to ship message to the release channelwhich normally comes at the same time as

completed release_final_verification did not arrive until late ET Monday due to waiting for antivirus job to complete.