updated pupynere
split contents of pupynere.py into two files (netcdf.py and pupynere.py)
update pupynere to 1.0.1
added proj4string instance variable.
bump version number.
add __geos_major_version__ variable for checking geos version.
additional file for testgdal.py
handle geos major version number more gracefully.
now works with geos version 3.
backward compat fix for geos < 3