Reduce message from warning to just debug.

A NIDS product without a symbology block is not an error, so don't bother
warning about it.
Refactor to move
main: ucar.nc2.util.net to ucar.httpclient.
Also made ucar.httpclient be top-level
with its own pom.xml.
Reasons:
1. so we can include this code in opuls d4client
without having any other thredds dependencies.
2. part of the long term campaign to regularize
the structure of cdm.
Fixed a bug that occurred when sorting in ImprovedFileChooser.
Fixed ImprovedFileChooser sorting bug again, but better!
H5iosp Tiling  bug; can cause missing sections;
Grib2Cusomizer.getIntervalNameShort -> getStatisticNameShort
yuan's changes to Rewrite
update tomcat download version - beaks it tests!
Test auth redirection
conflict resolution
Fixed redirect problem, partially; still getting 500 status
Rename HTTPProviderCache
Fix tigge problem now that the new password is set
Added three new grib tables per user request from NASA folks.  See e-support VNI-792787 or TDS-511 for details.  Updated readme.txt with info on sources and updated lookupTables.txt to find new tables.
Filled out the newly created ncep GRIB-1 Table 7-138-130
Filled out Grib-1 Table 7-4-130 per user supplied table info, see VNI-792787 or TDS-511 for details.
Added table Grib1-173-4-130 per NASA request, see VNI-792787 or TDS-511 for details.