Add CHANGES=1 to default env
Add CHANGES=1 to default env

dropbox/changes,bowlofstew/changes,wfxiang08/changes,dropbox/changes,bowlofstew/changes,dropbox/changes,wfxiang08/changes,dropbox/changes,wfxiang08/changes,bowlofstew/changes,wfxiang08/changes,bowlofstew/changes