Modify tsv2toml.py to group Fedora full names and abbreviations
    
    The incoming spreadsheet has a row for each Fedora license.  The short
    name or full name that Fedora used may map to the same SPDX
    expression.  The import process now will group all of the Fedora full
    name and short names per single SPDX expression used to name the TOML
    files.