Merge branch 'nginx' (nginx-1.9.12).

Change-Id: I554355b78a2bd766090179769a5fde494580090d
Signed-off-by: Piotr Sikora <piotrsikora@google.com>
tree: c051228f30cc862540e2ee64468c9825c7a3606d
  1. auto/
  2. conf/
  3. contrib/
  4. docs/
  5. misc/
  6. src/
  7. .hgtags
  8. BUILD
  9. LICENSE