parse_olson: removing 'factory' from --old as it's broken
Silence "Use of uninitialized value in addition" warnings when "parse_olson --old" is run
Generate usable Etc/GMT+XX modules when "parse_olson --old" is run
Allow Etc/GMT+XX modules to be used
Pass tests when ecetera timezones are included
Code formatting tweaks
Update version hack in parse_olson
Changes entry for --old support