parser now does the following for each data value:
1) promote unsigned values to next larger type
2) replace with null if value equals missing value
3) apply scale factor and addition offset
to do this, the netcdf variable for each structure member was needed
this required walking the variable list along with the struct iterator
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added current WMO BUFR code/flag XML table file
created parser that can read the WMO XML
created JAXB files for BUFR translation XML files
created utility to generate translation tables for specific BUFR tables
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