Upstream backport.

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

Signed-off-by: Jianhui Zhao <zhaojh329@gmail.com>

Signed-off-by: Jianhui Zhao <zhaojh329@gmail.com>

Signed-off-by: Jianhui Zhao <jianhuizhao329@gmail.com>

This change is inspired by commit openwrt/openwrt@38b22b1e ("nghttp2:
deduplicate files in libnghttp2")

The packages in this commit are identified with the following command

	grep -rin -E 'INSTALL_(DATA|BIN)' | grep -F '.so' | grep -F '*'

Some of them do not have symlinks and are not affected, but the change
is still applied for consideration of best practices just in case

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

Signed-off-by: Jianhui Zhao <jianhuizhao329@gmail.com>

Signed-off-by: Jianhui Zhao <jianhuizhao329@gmail.com>

Signed-off-by: Jianhui Zhao <jianhuizhao329@gmail.com>

ecb3ea9 Fix compile error on openwrt-x64
d9ef540 mention some code in lua_template.c copied from.

Signed-off-by: Jianhui Zhao <jianhuizhao329@gmail.com>

Signed-off-by: Jianhui Zhao <jianhuizhao329@gmail.com>

Signed-off-by: Jianhui Zhao <jianhuizhao329@gmail.com>

Next generation WifiDog

Signed-off-by: Jianhui Zhao <jianhuizhao329@gmail.com>