Continued to flesh out cmake support for libnetcdf.settings.  Added a pair of functions which will return a yes/no depending on whether or not a variable is defined.  By default, cmake uses TRUE/FALSE.
Continued to flesh out cmake support for libnetcdf.settings.  Added
a pair of functions which will return a yes/no depending on whether
or not a variable is defined.  By default, cmake uses TRUE/FALSE.

Unidata/netcdf-c,Unidata/netcdf-c,Unidata/netcdf-c,Unidata/netcdf-c