[apparmor] [Merge] ~u-d/apparmor-profiles:thunderbird/launcher into apparmor-profiles:master

[Vincas Dargis]

Sorry for off-topic, but could you elaborate this:

> tl;dr I'm not sure this is actually a problem, even with merged /usr. 

So what are the AppArmor guidelines for these merge/separate usr exactly?
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https://code.launchpad.net/~u-d/apparmor-profiles/+git/apparmor-profiles/+merge/320276
Your team AppArmor Developers is requested to review the proposed merge of ~u-d/apparmor-profiles:thunderbird/launcher into apparmor-profiles:master.