faster to compile.

A small selection of packages was tested going from:

Executed in  696.30 secs   fish           external
   usr time   82.98 mins  395.00 micros   82.98 mins
   sys time    9.02 mins    0.00 micros    9.02 mins

to:

Executed in  592.20 secs   fish           external
   usr time   84.84 mins  361.00 micros   84.84 mins
   sys time    8.85 mins   57.00 micros    8.85 mins

Tested by running make -j 12 and wiping staging/build_dir/target_x

Signed-off-by: Rosen Penev <rosenp@gmail.com>

Signed-off-by: Jan Pavlinec <jan.pavlinec@nic.cz>

Signed-off-by: Peter Wagner <tripolar@gmx.at>

Signed-off-by: Peter Wagner <tripolar@gmx.at>

Signed-off-by: Peter Wagner <tripolar@gmx.at>

Signed-off-by: Peter Wagner <tripolar@gmx.at>

Signed-off-by: Peter Wagner <tripolar@gmx.at>

Signed-off-by: Peter Wagner <tripolar@gmx.at>

Signed-off-by: Peter Wagner <tripolar@gmx.at>

Fixes CVE-2018-19758

a/ulaw: fix multiple buffer overflows

Signed-off-by: Peter Wagner <tripolar@gmx.at>

Signed-off-by: Rosen Penev <rosenp@gmail.com>

Signed-off-by: Peter Wagner <tripolar@gmx.at>

Signed-off-by: Peter Wagner <tripolar@gmx.at>

Fixes CVEs:
CVE-2017-6892
CVE-2017-8361
CVE-2017-8362
CVE-2017-8363
CVE-2017-8365
CVE-2017-12562
CVE-2017-14245
CVE-2017-14246
CVE-2017-14634
CVE-2018-13139
CVE-2018-13419

Signed-off-by: Peter Wagner <tripolar@gmx.at>

This is a long overdue followup commit to openwrt/openwrt@5d9eeab
("build: remove obsolete references to cris and avr32")

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

Signed-off-by: Peter Wagner <tripolar@gmx.at>

Signed-off-by: Peter Wagner <tripolar@gmx.at>

alsa-lib
glib2
libffi
libsndfile
libtorrent
speex
tcp_wrappers
etherwake
git
nfs-kernel-server
portmap
rtorrent

Signed-off-by: Peter Wagner <tripolar@gmx.at>