Upgrade external/boost to latest Boost 1.76.0

*  <https://dev-www.libreoffice.org/src/boost_1_76_0.tar.xz> has been generated
(on Fedora 34) with

> $ wget https://boostorg.jfrog.io/native/main/release/1.76.0/source/boost_1_76_0.tar.bz2
> $ printf 'f0397ba6e982c4450f27bf32a2a83292aba035b827a5623a14636ea583318c41 boost_1_76_0.tar.bz2' | sha256sum -c # cf. <https://www.boost.org/users/history/version_1_76_0.html>
> boost_1_76_0.tar.bz2: OK
> $ external/boost/repack_tarball.sh boost_1_76_0.tar.bz2
> Unpacking boost_1_76_0.tar.bz2 ...
> Removing unnecessary files ...
> Creating boost_1_76_0.tar.xz ...
> Cleaning up ...
> adfa0ca971c56006a8304b6146d1382e6369815d568f6e6a7440fe29995d51b8  boost_1_76_0.tar.xz
> Done.

*  external/boost/0001-Fix-include-inside-boost-namespace.patch.2 is necessary
to fix

> checking for boost/math/constants/constants.hpp... no
> configure: error: Required boost headers not found.
> make[1]: *** [external/libzmf/ExternalProject_libzmf.mk:28: workdir/ExternalProject/libzmf/build] Error 1

with recent libstdc++ 12 trunk (presumably since
<https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=261d5a4a459bd49942e53bc83334ccc7154a09d5>
"libstdc++: Reduce header dependencies on <array> and <utility>", and with other
standard libraries <utility> was likely already included indirectly earlier, so
the include nested in namespace boost::math::tools::meta_programming in the
middle of workdir/UnpackedTarball/boost/boost/math/tools/mp.hpp didn't cause
harm).

Change-Id: I1eee23915fea48bbb383cbeefc4ddfdeaac63e14
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/120253
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

0 files changed, 0 insertions, 0 deletions