K 10
svn:author
V 6
rpaulo
K 8
svn:date
V 27
2015-02-17T23:13:45.137626Z
K 7
svn:log
V 494
release: use xz via pipe when compressing the tarballs.

libarchive(3) doesn't support the new liblzma API yet, but this change
allows us to enable multi-threaded xz compression.
``make release'' should now finish in half the time on a machine with
several cores and fast disks (our typical build server).

This behaviour only applies when building a release and it doesn't
affect buildworld/installworld.  To disable threaded xz compression,
set XZ_THREADS=1.

Reviewed by:	gjb
Tested by:	gjb

END