Upgrade external/boost to latest Boost 1.85.0
<https://dev-www.libreoffice.org/src/boost_1_85_0.tar.xz> has been generated (on
Fedora 40) with
> $ wget https://boostorg.jfrog.io/artifactory/main/release/1.85.0/source/boost_1_85_0.tar.bz2
> $ printf '7009fe1faa1697476bdc7027703a2badb84e849b7b0baad5086b087b971f8617 boost_1_85_0.tar.bz2' | sha256sum -c # cf. <https://www.boost.org/users/history/version_1_85_0.html>
> boost_1_85_0.tar.bz2: OK
> $ external/boost/repack_tarball.sh boost_1_85_0.tar.bz2
> Unpacking boost_1_85_0.tar.bz2 ...
> Removing unnecessary files ...
> Creating boost_1_85_0.tar.xz ...
> Cleaning up ...
> 4e23218ff5036d57afd20f7cdab2e94cdbf6ba9c509d656ace643a81c40a985a boost_1_85_0.tar.xz
> Done.
Three patches failed to apply:
* external/boost/boost_1_59_0.property_tree.wreturn-type.patch ("aka MSVC
warning C4715: not all control paths return a value") should no longer be
necessary after
<https://github.com/boostorg/property_tree/commit/
e7c4005098749d878375be9ea8778b420ee89b86>
"Use BOOST_UNREACHABLE_RETURN at the end of function" (the referenced
<https://svn.boost.org/trac/boost/ticket/11501> appears to no longer be
reachable, though).
* The boost/math parts of external/boost/Wundef.patch.0 are obsoleted by
<https://github.com/boostorg/math/commit/
30cb6fc1fe871046c2880c8c39b0cea5b91a7f2c>
"Fix -Wundef warnings".
* external/boost/boost-emscripten-noshm.patch.0 is obsoleeted by
<https://github.com/boostorg/interprocess/commit/
94ead3e59d197e0d8d908b7e8918673bed51fa34>
"emscripten doesn't support shm".
Change-Id: Id2d86d25a60097f3f0852063b5ac2a8220f6b479
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/166656
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <stephan.bergmann@allotropia.de>