find misplaced records for NCDC;
skip grib records that dont have 7777 at end;
append "_ens" to ensemble variables
CFGridWrite : replace exisitin ACDD attributes; bug when existing atts are String valued.
CFGridWrite : replace exisitin ACDD attributes; bug when existing atts are String valued (2)
Allow unrecognized HDF5 messages - just log warning
make getBitMap public per request
CollectionGlob - first pass;
ReportPanel refactor
  bug in CDO putting wrong standard name, so check units first (!)
1. fix library defaulting in Nc4Iosp
2. fix // in url in opendapservlettest
Merge branch '4.5.0' of https://github.com/Unidata/thredds into 4.5.0
Fix url
Fix sizes of graphic point structures.

This fixes reading of Hail Index product, among others.
Provide more debug info
docs
Merge remote-tracking branch 'origin/4.5.0' into 4.5.0
move utility function from NetcdfDataset to Misc