pg*.dll and *.pdb files in psqlODBC have no version numbers

I posted this question to pgsql-general@lists.postgrsql.org last week but on one has responded so posting here now.

We download the ODBC source from http://ftp.postgresql.org and build it on-site, 13.02.0000 in this case.

A colleague noticed that the following files in the psqlODBC MSI for Windows have no version numbers:
pgenlist.dll
pgenlista.dll
pgxalib.dll
pgenlist.pdb
pgenlista.pdb
psqlodbc30a.pdb
psqlodbc35w.pdb

Does anyone know if that is be design or some other reason?   Should they have version numbers?

I checked earlier build and the same holds for ODBC 12.02.0000.

Thanks, Mark