1) For now, the RCG will accept either ifo= or site=, eg ifo=X2 or site=X2 to designate the IFO in the cdsParameter block. This
    obviates the need for immediate changes to present Matlab control models. All new models, and eventually all old models,
    should use the ifo= designator as the site= designator will be deprecated in a TBD future release.
2) At compile time, if a model still contains the site= designator, a warning message will be written to alert user to change to ifo=.
     This is simply a warning for now.
3) I have gone thru all the RCG Perl code to change site to ifo, where appropriate.  I think things are consistent now ie site is a
     location eg lho, llo, lao, etc. and ifo is the IFO designator eg ifo=H1, L1, A1, etc.