[tz] [PROPOSED] Merge timezones that are alike since 1970

[Paul Eggert]

On 6/1/21 5:44 PM, David Patte wrote:
> is the backzone data 'frozen'?

Not at all. The file is not a hotbed of activity (averaging 9 changes 
per year since 2014) but fixes are welcome. As befitting backzone's 
status, patches are not reviewed as carefully as other files' patches.

As usual with fixes, please use 'git format-patch' to generate patches, 
and attach them to your email or send them via 'git send-email'. And 
it's helpful to test your patches with 'make check' or 'make public' 
before sending them out.