Tables Y2018.Text.Core.GC and Y2018.Text.Core.Ultcase is
      generated from file UnicodeData.txt by procedures CreateGC and
      CreateULTcase. The UnicodeData.txt is inside then UCD zip file
      from Unicode.org. The zip file has to be unzipped in a directory
      before the UnicodeData.txt file can be accessed.
    
Syntax for call is: ./creategc /../UnicodeData.txt
      The result is in a file GC_.ads . The reason why
      resultfile is named GC_.ads and not GC.ads is only a security
      solution for not overwriting x.core.src.GC.ads, although it is a
      valid ads-file. 
    
Syntax for call is: ./createultcase /../UnicodeData.txt
      The result is in a file ULTcase_.ads . The reason why
      resultfile is named ULTcase_.ads and not ULTcase.ads is only a
      security solution for not overwriting x.core.src.ULTcase.ads,
      although it is a valid ads-file.