exiftool 9.60

ExifTool 9.60 (production release)

Kindly pull the 9.60 (production release) update. You may find History at:
http://www.sno.phy.queensu.ca/~phil/exiftool/history.html

Kind regards,

-hq

Closes #29148.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
pypy: fix pypy's pip and easy-install links to bin
pypy: remove useless unless
pypy: add 2.3.0 bottle.