Update lang/erlang to 19.0.2.

[olgeni]

Summary

Quick diff to keep track of the Erlang 19 upgrade and help testers.

Test Plan

These ports do not currently build:

databases/couchdb (patch available as PR 211012)
devel/erlang-erlware_commons
devel/erlang-exmpp
textproc/erlang-p1xml
www/erlang-webmachine

net/rabbitmq builds, but there is a known incompatibility in the web interface; a patch or a version update will be required.

[olgeni]

textproc/erlang-p1xml should probably be replaced by https://github.com/processone/fast_xml

[dch]

thanks, couchdb patch works with these new patches!

[olgeni]

19.0.2 got out.

[farrokhi]

In D7197#149607, @olgeni wrote:

textproc/erlang-p1xml should probably be replaced by https://github.com/processone/fast_xml

I retired textproc/erlang-p1xml in favor of textproc/erlang-fast_xml (as per D8471)

[dch]

pretty sure we can close 🗡 this now that 19.2.3 is already in ports