MFC r208189:

MFC r208189:

Removed ar(1)'s support for compressed archives. This change removes
ar(1)'s dependencies on compressor libraries -lz, -lbz2 and -llzma and
fixes building HEAD on some versions of FreeBSD[78]. Option -j and -z
is now accepted but ignored.

Compressed ar(1) archives are not useful without a ld(1) that can read
them. Also, the current ar(1) compression scheme prevents random
access of archive members and needs to be redesigned anyway.

git-svn-id: svn://svn.freebsd.org/base/stable/8@221587 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f