```
miniupnpc changelog:
http://miniupnp.free.fr/files/changelog.php?file=miniupnpc-2.0.20180203.tar.gz
2.0.20180203 includes fixes for the recent buffer overflow and segfault
issues, see miniupnp/miniupnp#268.
expat changelog:
https://github.com/libexpat/libexpat/blob/R_2_2_5/expat/Changes
2.2.2 & 2.2.3 included security fixes.
Also includes latest config.guess and config.sub.
```
This updates our depends version for expat, miniupnpc, config.guess and
config.sub.
The ccache version is **NOT** updated (see D5503).
It also includes a fix for miniupnpc.
Backport of core PR12402 and PR12466.
*Note to reviewers:* the diff ends up fairly large due to the pull of
config.guess and config.sub. However this is mostly formatting changes
(`${FOO}` vs `$FOO` in particular), and there was no merge conflict
during the cherry-pick.