bsdtar/libarchive change behaviour 9->10

Hi All,

there are two systems which produce different results:
-----
% uname -a
FreeBSD int.wart.ru 9.2-BETA2 FreeBSD 9.2-BETA2 #19 r253968: Tue Aug  6
04:16:05 SAMT 2013     bsam_at_int.wart.ru:/usr/obj/usr/src/sys/INT  i386

% tar --version
bsdtar 2.8.5 - libarchive 2.8.5

% tar -tf /usr/ports/distfiles/Catalyst-Plugin-Prototype-1.33.tar.gz |
grep Plugin/
Catalyst-Plugin-Prototype-1.33/lib/Catalyst/Plugin/
Catalyst-Plugin-Prototype-1.33/lib/Catalyst/Plugin/._Prototype.pm
Catalyst-Plugin-Prototype-1.33/lib/Catalyst/Plugin/Prototype.pm
-----
% uname -a
FreeBSD srv.bb.tel.ru 10.0-CURRENT FreeBSD 10.0-CURRENT #7 r253953: Mon
Aug  5 16:16:42 SAMT 2013
bsam_at_srv.bb.tel.ru:/usr/obj/usr/src/sys/BB64X  amd64

% tar --version
bsdtar 3.1.2 - libarchive 3.1.2

% tar -tf /usr/ports/distfiles/Catalyst-Plugin-Prototype-1.33.tar.gz |
grep Plugin/
Catalyst-Plugin-Prototype-1.33/lib/Catalyst/Plugin/
Catalyst-Plugin-Prototype-1.33/lib/Catalyst/Plugin/Prototype.pm
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I.e. the CURRENT system does not honor the presence of "._*" file.
The file seems to be a MAC file and anyway get deletted before
installation.

So, the question is: is it a regression/bug/new feature?
Thanks!
-- 
WBR, Boris Samorodov (bsam)
FreeBSD Committer, http://www.FreeBSD.org The Power To Serve