JPSSnagg

Commit patch provided by Scott Mindock, CSPP SDR.

The patch accomplishes two things.

1. It adds support for CrIS FS - allow aggregation.

2. It adds support for jpss-1. The platform name was hard coded to npp.
The patch reads the platform from an input hdf and uses on output.

"make check" fails with 59 errors because
1. The additional product has not been added to the help/usage message.
2. Names composed for nagg output files do not have the correct platform
field (It contains the first three letters of the product instead of the
        platform code.)

Patch is needed to support new product and a new satellite. The former
is routine maintenance and the latter was overlooked in initial
development.  "make check" errors will be addressed before merge to
master branch.