Code review comment for lp:~epics-core/epics-base/link-support-2

I think I have the basics of pvalink.cpp w/ input links working again with json links, except for the lack of cleanup on shutdown. Still need to test output link.

https://github.com/mdavidsaver/v4workspace.git

Previously I had hooked into dbcar() for reporting. Do you intend some general reporting function for json links, or do I need to add a PVA link specific reporting function?