Merge remote-tracking branch 'devel/official-zmq'

* devel/official-zmq:
  Downgraded zeromq to official version not the one pyzmq downloads
Fixed download data, was mistakenly turned off is NOT building ONLINE, switch to the other way around, if building offline, then no sample data
Also now get WGET executable at conf time, used to get it from checked_get but that is written before we know if WGET is here so it was wrong on system w/o it
merged no data download branch