Merge change 4025

* changes:
  Make IPv6 definitions comply with RFC 3493:  - Add some definitions to netinet/in6.h  - Include netinet/in6.h from netinet/in.h
tree: 94efe4c66943c355d35d567d0c9b23620171ca31
  1. libc/
  2. libdl/
  3. libm/
  4. libstdc++/
  5. libthread_db/
  6. linker/
  7. .gitignore
  8. Android.mk