K 10
svn:author
V 6
emaste
K 8
svn:date
V 27
2022-01-05T01:55:37.875277Z
K 7
svn:log
V 757
ar: deprecate -T option

Other ar implementations (GNU, LLVM) use -T to mean thin archive
rather than use only the first fifteen characters of the archive member
name.  We support both -T and -f for this, with -f documented as an
alias of -T.

An exp-run showed that the ports invoking `ar -T` expect thin archives,
not truncated names.  Switch -f to be the documented flag for this
behaviour, and emit a warning when -T is used.

The warning will be changed to an error in the future (in main), once
ports no longer use -T.

PR:		260523 [exp-run]
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation

(cherry picked from commit edadbb46065d9ee9559140b2522197fcdba57064)

Git Hash:   df898828a4dc585d5be65ac710dbe0fdf9d7b3b9
Git Author: emaste@FreeBSD.org
END