Synchronet now requires the libarchive development package (e.g. libarchive-dev on Debian-based Linux distros, libarchive.org for more info) to build successfully.

Address GCC 9.3.0 warnings:

warning: format not a string literal and no format arguments
14 jobs for master in 11 minutes and 4 seconds (queued for 11 seconds)
Status Job ID Name Coverage
  Build
passed #18714
FreeBSD
jsdoor-freebsd

00:05:24

passed #18715
Linux
jsdoor-linux

00:07:33

passed #18717
FreeBSD
jsdoor-windows

00:02:37

passed #18709
FreeBSD
sbbs-freebsd

00:07:30

passed #18704
Linux
sbbs-linux

00:10:59

passed #18707
Windows
sbbs-windows

00:05:16

passed #18716
FreeBSD
sexpots-freebsd

00:00:11

passed #18705
Linux
sexpots-linux

00:00:29

passed #18708
Windows
sexpots-windows

00:00:26

passed #18712
FreeBSD
syncdraw-freebsd

00:00:29

passed #18713
Linux
syncdraw-linux

00:00:19

passed #18710
FreeBSD
syncterm-freebsd

00:01:19

passed #18706
Linux
syncterm-linux

00:01:14

passed #18711
FreeBSD
syncterm-windows

00:02:22