Backed out retiring BroadcastFrequencySpecification since properties used it. For #1004
Backed out retiring BroadcastFrequencySpecification since properties used it.
For #1004

tfrancart/schemaorg,schemaorg/schemaorg,vholland/schemaorg,vholland/schemaorg,unor/schemaorg,vholland/schemaorg,gkellogg/schemaorg,unor/schemaorg,schemaorg/schemaorg,schemaorg/schemaorg,dbs/schemaorg,schemaorg/schemaorg,vholland/schemaorg,tfrancart/schemaorg,gkellogg/schemaorg,tfrancart/schemaorg,dbs/schemaorg,schemaorg/schemaorg,gkellogg/schemaorg,tfrancart/schemaorg,dbs/schemaorg,unor/schemaorg,dbs/schemaorg,gkellogg/schemaorg