Added TIZ_LOGN macro to be a replacement for TIZ_LOG_CNAME
Replaced TIZ_LOG_CNAME -> TIZ_LOGN in tizkernel.c
Fixed MIN_INPUT_BUF_SIZE in VP8 decoder component
Fixed a problem in kernel_claim_buffer
Renamed APIs from tizport_ -> tiz_port_
Renamed APIs from tizapi_ -> tiz_api_
Renamed APIs from tizstate_ -> tiz_state_
Renamed object tizapi to tiz_api
Renamed init_tizapi to tiz_api_init
Renamed object tizservant to tiz_servant
Renamed init_tizservant to tiz_servant_init