DO NOT MERGE:Add missing SOCK_CLOEXEC flag when opening socket am: bef09aaf ...

DO NOT MERGE:Add missing SOCK_CLOEXEC flag when opening socket am: bef09aaf  -s ours am: b1fada15 am: 466a5216  -s ours am: ea11f554 am: f9326101 am: 6a40db71 am: fc6c0a34  -s ours am: 9df391f1 am: ab177b77 am: acdde344 am: c706c7ff am: 5a97ef91
am: 2422a0db  -s ours

Change-Id: I749ebcb33afecd03e615ac47ac96189ac9dda13a