build: use xz tarballs instead of bz2

xz is way better than bz2 with same/better decompression times.
Compression will take longer, but that's totally ok.

All new tarballs will be provided as xz only. Please adjust your
build-scripts to stop using bz2.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>

diff --git a/configure.ac b/configure.ac
index 45575e3..cad4ea8 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -16,7 +16,7 @@ AC_SYS_LARGEFILE
 AC_PREFIX_DEFAULT([/usr])
 AC_CANONICAL_HOST
 
-AM_INIT_AUTOMAKE([foreign 1.11 subdir-objects dist-bzip2 no-dist-gzip tar-pax -Wall -Werror -Wno-portability])
+AM_INIT_AUTOMAKE([foreign 1.11 subdir-objects dist-xz no-dist-gzip tar-pax -Wall -Werror -Wno-portability])
 AM_SILENT_RULES([yes])
 
 #