Generate fat datafiles
Generate fat datafiles

pytz can still only read the deprecated 'fat' compiled timezone
datafiles.

Support for 'slim' datafiles should be done by using the
Python 3.9 parser and the available backports. Python 2.7
will be stuck only able to use the 'fat' format.

stub42/pytz,stub42/pytz,stub42/pytz,stub42/pytz