add 'sync' to ISC_PLATFORM_USEMACASM build as well
add 'sync' to ISC_PLATFORM_USEMACASM build as well

each/bind9-collab,each/bind9-collab,pecharmin/bind9,pecharmin/bind9,each/bind9-collab,each/bind9-collab,pecharmin/bind9,pecharmin/bind9,pecharmin/bind9,pecharmin/bind9,each/bind9-collab,each/bind9-collab