Kill LOCAL_SOCKET_NAMESPACE.

Change-Id: I40c63b8e7ae1174ac902b545555ddab65b3fef38
Merge "Kill LOCAL_SOCKET_NAMESPACE."
Kill HAVE_BIG_ENDIAN, HAVE_ENDIAN_H, and HAVE_LITTLE_ENDIAN.

Change-Id: Ie596af7460ec33d70d7327e629b38d641ef48ba2
Merge "Kill HAVE_BIG_ENDIAN, HAVE_ENDIAN_H, and HAVE_LITTLE_ENDIAN."