Signed-off-by: David Bauer <mail@david-bauer.net>

The kernel build requires rsync.

ramips-mt76x8: add Xiaomi Mi Router 4A (100M Edition)

gluon-mesh-vpn-core: fix potential null pointer dereferences

gluon-mesh-vpn-tunneldigger: fix Lua mesh-vpn provider module location

read_stdout can return NULL and thus the return value need to be checked
prior to accessing it.

Signed-off-by: David Bauer <mail@david-bauer.net>

In case the limit_ingress or limit_egress options are not present in
gluon's mesh_vpn section the respondd provider compares a string literal
with a NULL pointer, crashing respondd.

Check both pointers prior to comparing them in order to mitigate this
issue.

Suggested-by: Matthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: David Bauer <mail@david-bauer.net>

treewide: use lua-jsonc instead of lua-cjson for JSON handling during build

64148a9baf14 lua-jsonc: add host build support
c2623391bf42 lua-jsonc: do not link against liblua

I mixed up two separate improvements into one, this change aims to
clarify them based on a suggestion and conversation with @T-X.

476b8b82b Merge pull request #15806 from blocktrron/pr-xr-usb-serial-1907
73c098477 xr_usb_serial_common: add PKG_MIRROR_HASH
7100f4006 xr_usb_serial_common: fix build
465ddb5b2 Merge pull request #15770 from DeathCamel58/libnet-1.2.x-libnet-config-fix
f7d4a6753 Merge pull request #15780 from stangri/19.07-https-dns-proxy
6ab17abde https-dns-proxy: update to 2021-06-03-1
bdbf33f69 libnet: Export `libnet-config` in development enviornments

Signed-off-by: David Bauer <mail@david-bauer.net>

gluon-status-page: add bandwidth limit

ffd4452f8b mac80211: Update to backports version 4.19.193-test1
ccc505502e kernel: bump 4.14 to 4.14.235

gluon-mesh-vpn-core: respondd bandwidth_limit

omit unlimited bandwidth limit
A value of '-' marks a streamdirection as unlimited.

gluon-status-page: vpn protocol