Merge 'upstream-master' into master

* aosp/upstream-master:
  Add qualifier / typedef / array / pointer test
  ir: Arrays are indirect types for type structure similarity purposes
  ir: Add better comments to types_have_similar_structure

Signed-off-by: Matthias Maennich <maennich@google.com>
Change-Id: I1fe1d2109c09585041b0f5886ab20f3e190118aa