THANKS: added people from the curl 7.60.0 release

release: 7.59.0

THANKS + mailmap: remove duplicates, fixup full names

RELEASE-NOTES/THANKS: synced with cc1d4c505

RELEASE: 7.58.0

THANKS: added missing names

... as I reran the contrithanks script after the mailmap name fixups.

mailmap: added/clarified several names

THANKS: added contributors from 7.57.0 release

THANKS: update at 7.56.1 release time

THANKS: added new 7.56.0 contributors

RELEASE-NOTES/THANKS: curl 7.55.1 release time

THANKS: 20 new contributors in 7.55.0

release: 7.54.1

THANKS: add a few missing names

... I found them in the commit logs from the early years

THANKS: add contributors from 7.54.0 release notes

release: 7.53.1

release: 7.53.0

THANKS: 13 new contributors from 7.52.0

THANKS: synced with 7.51.0

THANKS: updated with curl 7.50.3 contributors

THANKS: updated for 7.50.2

THANKS: 7 new contributors from the 7.50.1 release

THANKS: 13 new contributors from the 7.50.0 release

THANKS: updated after script fixes

Now giving credit properly to github user names, fixed some UTF-8 issues
and added names discovered when contrithanks was improved.

THANKS: 24 new names from 7.49.0 release notes