Set default optimization level to -O1#2411

Merged

danpovey merged 4 commits intokaldi-asr:masterfrom

galv:default-optimization

Aug 29, 2018

Commits on Aug 24, 2018

Set default optimization level to -O1
galv
committed

Commits on Aug 26, 2018

Suppress many warnings caused by enabling -O1
galv
committed

Commits on Aug 27, 2018