REORG: stream-int: Uninline si_sync_recv() and make si_cs_recv() private

This way si_*_recv() and si_*_sned() API are defined the same
way. si_sync_snd/si_sync_recv are both exported and defined in the C
file. And si_cs_send/si_cs_recv are private and only used by
stream-interface internals.
2 files changed