Cherry-pick the following commits from master to bump opkg in LEDE 17.01:

b65dc04712 opkg: switch to own fork to improve memory usage
55ffc38004 opkg: re-enable usign support
19720a6f03 opkg: fix handling conffiles in status lists
9e4555f58d opkg: fix stray printf() (#551)
ebf846b005 opkg: mark as essential (FS#571)
aedd5d5cb0 opkg: fix several package installation bugs
48ae44d033 opkg: gracefully handle missing $PATH, fix build warnings
1449b52f02 opkg: backport upstream fixes, code cleanups

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

Commit 5c20a4fec923c3 ("ubox: turn logd into a separate package") changed
the PKG_SOURCE_DATE which is also included in the tar file. This change
resulted in a new tar with a different hash, but the sha256 hash was not
updated. Fix the sha256 hash value in this commit to match what would be
created from git and what is already on the mirror.

Signed-off-by: Hauke Mehrtens <hauke.mehrtens@intel.com>

5f91241 procd: add cancel_timeout on rc scripts when a runtime_timeout is specified
961dc69 procd: stop service using SIGKILL if SIGTERM failed to do so

Fixes FS#516.

Signed-off-by: John Crispin <john@phrozen.org>
(cherry picked from commit 946d1dfb87d41cf9ffb487522f6a84a5e87edafb)
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>

Fixes compatibility issues with glibc 2.25

Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry picked from commit 2ffb80bc9f829f81878b12a10b0a352d3f76c421)

c09e4f0 ubusd: fix incomplete copy of shared buf during queue-ing
453b87f cli: add support for subscribing to objects
6eb3c96 cli: do not use default timeout for listen
dfe3383 libubus: reset ctx->sock.error when doing ubus reconnect
34c6e81 cli: fix listen_timeout compile issue

Signed-off-by: Felix Fietkau <nbd@nbd.name>

Adds the following fixes:

91acde6 libubus: do not modify uloop_cancelled
763b9b2 libubus: reset ctx->sock.eof to fix reconnect issues

Signed-off-by: Felix Fietkau <nbd@nbd.name>

Default trigger action timeout was added to procd.sh in commit f88e3a4c0
(procd: add default timeout for reload trigger actions)
However, the timeout value was not placed under the correct JSON-script
array nesting level and thus did not apply.

To fix this and make the timeout actually apply to the reload triggers,
we place it in the correct scope, that is the per-trigger array.

Fixes: f88e3a4c0abb60bb76a7678dd30dfdc8a808a2f1
Signed-off-by: Denis Osvald <denis.osvald@sartura.hr>

cdc3dab ujail: fix signal forwarding

Signed-off-by: John Crispin <john@phrozen.org>

A given signal-name is now converted to the corresonding number. In general
it's good style to use names (readability) and it's more portable: signal
numbers can be architecture-dependent, so we are more safe giving names.

A real world example is signal 10, which is BUS on ramips and USR1 on PPC.

All users of 'procd_send_signal' must change their code to reflect this.

Signed-off-by: Bastian Bittorf <bb@npl.de>

Clarify opkg's messages related to downloads:

* more visible error message for package list download failure
* separate error message for signature file download error
* if wget returns 4, signal the network error more clearly
* remove '.' from end of filenames and URLs

* try signature check only if the package list was downloaded ok.

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>