#1247 POP data translation broken - incorrect domain extents

[clynejp]

Translation of POP data sets is broken. This is a regression from 2.5.0.RC0.

To reproduce:
1. Translate /glade/p/DASG/VAPOR/Data/POP/BryanASP/one_degree/v5_rel04_BC5_ne30_g16.pop.h.0045-01.nc dataset with momvdfcreate:

% momvdfcreate v5_rel04_BC5_ne30_g16.pop.h.0045-01.nc foo.vdf

2. Examine the .vdf file. The extents are:

15220435.88126939 -9402613.716068748 -5375 -15220435.67743731 9402614.225920713 -5

They should be:

-20014468.44233064 -8849043.03905705 -5375 20014468.60539629 8849042.958339546 -5