Update two older plot sets to be consistent with changes made earlier today to uvcdat.py.
Update the plotspec class to be consistent with changes made earlier today in uvcdat.py.
Update some older classes to be consistent with changes made to this file earlier today.
And finish the changes in uvcdat.py - which are, basically, eliminating all the x*vars and y*vars
variable lists, and adding a z2vars one.
the usual trivial changes