more lcbio fixups

Change-Id: Ic877a3ffaf30b4b3c025bcd247faf838a11b3f9e
socktest fixups

Change-Id: Ie0e3b28d134f2820b25da1cf5a338e15dcf6e89f
use sched_yield() rather than pthread_yield()

Change-Id: Ic9c09dc84474f604b2115c74460ac8da5499cb9b
Remove old I/O code

Change-Id: Ie5810beb4f4e5f1d695a7c294dcd771f0d224e16
lcbio fixups..

Change-Id: Ie0ff898efed0d882fd3d9276c0046a2a5c429fb5
socktest fixups

Change-Id: I12d6a7b713fccb7960829c97250bc2f2aba99537