h4cflib

HFRCFLIB-130, use a map(var path to latlon1D_samedim) to make sure 1-D lat and lon's dimension names are compared within the same group.
Also modify eoslib_group.h to include a flag to check if this file includes multi-groups. If not(means it only has one single group), we still use the old routine to compare to reduce the large number of string comparison to check the variable path.

Tested with visual studio 2010 on the basic H4toCF/netCDF-4 conversion.