6/2016:  added LICENSE file and license terms to ggrib/bilingrb codes.
         replace include <strings.h> by include <string.h>
5/2005:  updated version bilingrb
7/2004:  added P_depth and P_depth_layer to pdstool.h
11/2003: updated version of ggrib
10/2003: fix bug when encoding ECMWF style grib files
         (bug triggered an error message so obviously nobody found the bug!)
1/2003: check that bds_size is not too big
5/21/98: fixed rd_grib_rec so that it works
9/28/99: added new grid types
10/2/99: fixed P_dec_scale P_def_dec_scale
10/6/99: Added support for random access to GRIB data.  Use
         wgrib inventories as the index files (inv_scan.c)
10/8/99: updated gds.h and pds4.h files
11/8/99: fixed P_dec_scale, (pdstool.h: s2bytes)
11/23/99: fixed P_p1p2, (pdstool.h: s2bytes)
10/04/00: fixed several pdstool.h definitions
3/29/01: fixed new_polar_GDS
9/21/01: ggrib command added