Allow returning functions in addition to the names of UCI packages to
commit. Functions are run after all packages have been committed.

Both gluon.sysconfig and libgluonutil already remove the trailing newline
if it exists. It's nicer to avoid files without a trailing newline, e.g.
for printing the file contents in a terminal.

Patch originally authored by @oleeander.

Fixes #424

Allows to remove some redundant UCI lookups.

7abd688e6ae7 sse-multiplex: don't use stdio FILE I/O for nonblocking sockets

2e26bdfeca ar71xx: remove bs-partition ro-flag for UniFi AC
28483d4ab2 procd: update to latest git HEAD

Fixes #1322

This is currently only implemented in the gluon-mesh-vpn-fastd
package.

Advertising the public key may be deemed problematic when
your threat-model involves protecting the nodes privacy
from tunnel traffic correlation by onlink observers.

It can be enabled by setting site.mesh_vpn.fastd.pubkey_privacy
to `false`.

Fixes: cfe1bba8 "gluon-web: fix radio button view of ListValues"

Fixes validation of ListValues.

Fixes: ec532b95 "gluon-web: extend ListValue with optional and unset
values"

including backport of mtd patches.

The general flash issue (32MB) was discussed here:
https://gist.github.com/dmke/d389bc364b3f73f525076eaee0019dc1
The resulting patch was the following:
http://lists.infradead.org/pipermail/linux-mtd/2016-December/070889.html

Another patch by nbd168 added the required mtd read operations for supporting ZBT-WG3526-32M:
https://github.com/lede-project/source/commit/22d982e#diff-3835f027e16e6416090c1833bc732af3

b1205a9211 ar71xx: /lib/ar71xx.sh: add model detection for TP-Link TL-WR810N
fbeae9d891 iptables: make kmod-ipt-debug part of default ALL build
6ea9a702c5 iptables: Fix target TRACE issue
00fa1e4108 curl: fix libcurl/mbedtls async interface
d5278cc48b kernel: bump 4.4 to 4.4.112 for 17.01
2ae0741f3b dnsmasq: backport validation fix in dnssec security fix
58d60bd283 dnsmasq: backport dnssec security fix for 17.01
d626aa005b mountd: bump to git HEAD version
f0336975be kernel: bump 4.4 to 4.4.111 for 17.01
fb6f21c657 kmod-sched-cake: bump to latest cake bake for 17.01
2e8a3bb35f ar71xx: Netgear WNR2000v4: do not include USB packages [17.01]
3fa86282fa build: fix restoring /etc/opkg with PER_DEVICE_ROOTFS
987a7e3175 ramips: fix lenovo newifi-y1 switch and LED config
dbb5ffaed5 ramips: firewrt: indicate boot status via LED

The prefix is not used, and requesting it leads to odhcp6c log spam with
certain DHCPv6 servers.

If a value is unset or optional, an empty choice is added to the selection.
This empty choice will be marked as invalid if the value is not optional.

This is properly supported for the 'select' widget only for now, and not
for 'radio'.

Pretty much everything about this was broken:
* Fix dependency tracking
* Fix vertical orientation
* Fix paddings
* Add theming

Solves a recursive dependency problem.

While we're at it, also fix the description string.

target files cleanup: variable checks and comments

as GLUON_WLAN_MESH now is set by default, ATH10K_PACKAGES is set by default, too

Based-on-patch-by: lemoer <git@irrelefant.net>

[Matthias Schiffer: rebase]

[Matthias Schiffer: rebase and simplify]

Each domain is validated separately, preferring domain values to site
values.

Based-on-patch-by: lemoer <git@irrelefant.net>

This does not do anything yet, as this_domain() is not implemented yet.

Based-on-patch-by: lemoer <git@irrelefant.net>

fixes build after 3ec63b8c

This package drops all incoming router advertisements except for the
default router with the best metric according to B.A.T.M.A.N. advanced.

Note that advertisements originating from the node itself (for example
via gluon-radvd) are not affected.

Also disabling TX checksums and not only allowing incoming packets without
checksum will provide another small speedup. As doing so would break wired
meshing with VXLAN-enabled nodes that require non-zero checksums, we will
wait a few days before this step.

Evaluating these rules before all the ICMPv6 rules improves wired mesh
throughput measurably.

Improves performance slightly.