* luci-app-ssr-plus: optimize subscribe

1: Sort by airport.
2: Select node optimize.
3: Full update, delete md5 hashkey.

* luci-app-ssr-plus: select first server

* luci-app-ssr-plus: fix uci bug

commit:
  40de4c0 elfutils: bump to 0.176
  4760541 elfutils: Fix compile with uClibc-ng
  0851ce4 elfutils: bump to 0.177
  f4da28c elfutils: Add host build

This reverts commit 49e1a7c9.

- openwrt/openwrt@983605e
pppd: update to 2.4.8

- openwrt/openwrt@3589051
ppp: backport security fixes

- openwrt/openwrt@2c3c83e
ppp: activate PIE ASLR by default
Signed-off-by: NCN_SZTL <cnsztl@project-openwrt.eu.org>

This reverts commit 84bf3aad.

Co-authored-by: Namily <ssr0@ssr0.cn>

commit:
  b494734 strace: fix configuration options
  ce8226a strace: Only allow libdw or libunwind
  b55fbb6 strace: update to version 4.26
  e669cf7 strace: Update to version 5.0
  9ba5cd8 strace: update to version 5.3
  b01305c strace: Fix build on PowerPC
  9a3b10b strace: update to version 5.4
  b55f68d strace: update to version 5.5