Use ki_* socket methods in socket_test to fix linux trusted mode.

Use ki_* socket methods in socket_test to fix linux trusted mode.

We recently switch to using glibc hooks for interception on glibc.
Where in the past calls like ki_accept and accept could be assumed to be the
same, now they rely on wrapping.

Changing inconsistent use of ki_ vs not in socket_test.

BUG=None
TEST=nacl_io_socket_test
R=binji@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=271453

[binji, 2014-05-19 18:45:43]

lgtm % trybots

[bradn, 2014-05-19 19:35:31]

Committed patchset #1 manually as r271453 (presubmit successful).