Revert "Use lua.NewThread() to avoid crash in pipeline.(#89)"
Revert "Use lua.NewThread() to avoid crash in pipeline.(#89)"

This reverts commit f5142e9ca166dd4a919ccf1f199bf69bb0ac4fdd.

hattya/nyagos,tyochiai/nyagos,zetamatta/nyagos,hattya/nyagos,hattya/nyagos,tsuyoshicho/nyagos,nocd5/nyagos