Link error: undefined reference to `__mulodi4' with Clang 32-bit

[Luke Benes]

Commit https://cgit.freedesktop.org/libreoffice/core/commit/?id=4f0b226600fdad4e5aef9313fe8754c765cfee42
Check for overflow in multiply

is causing a build error with Clang 4.0 and 5.0 x86. Reverting this commit resolves the error. 

[build DEP] LNK:Library/libtllo.so
[build LNK] Library/libtllo.so
[build PKG] curl
/core/workdir/CxxObject/tools/source/generic/fract.o: In function `Fraction::operator*=(Fraction const&)':
/core/tools/source/generic/fract.cxx:(.text+0x695): undefined reference to `__mulodi4'
/core/tools/source/generic/fract.cxx:(.text+0x70a): undefined reference to `__mulodi4'
[build CXX] svl/source/config/asiancfg.cxx
clang-5.0: error: linker command failed with exit code 1 (use -v to see invocation)
/core/tools/Library_tl.mk:20: recipe for target '/core/instdir/program/libtllo.so' failed
make[1]: *** [/core/instdir/program/libtllo.so] Error 1
make[1]: *** Waiting for unfinished jobs....
In file included from /core/svl/source/config/asiancfg.cxx:34:
In file included from /core/include/comphelper/configuration.hxx:15:
/core/external/boost/include/boost/optional.hpp:11:32: warning: unknown warning group '-Wplacement-new', ignored [-Wunknown-warning-option]
#pragma GCC diagnostic ignored "-Wplacement-new"
                               ^
In file included from /core/svl/source/config/asiancfg.cxx:34:
In file included from /core/include/comphelper/configuration.hxx:15:
In file included from /core/external/boost/include/boost/optional.hpp:22:
In file included from /core/workdir/UnpackedTarball/boost/boost/optional.hpp:15:
/core/external/boost/include/boost/optional/optional.hpp:11:32: warning: unknown warning group '-Wplacement-new', ignored [-Wunknown-warning-option]
#pragma GCC diagnostic ignored "-Wplacement-new"
                               ^
In file included from /core/svl/source/config/asiancfg.cxx:34:
In file included from /core/include/comphelper/configuration.hxx:15:
In file included from /core/external/boost/include/boost/optional.hpp:22:
In file included from /core/workdir/UnpackedTarball/boost/boost/optional.hpp:15:
In file included from /core/external/boost/include/boost/optional/optional.hpp:22:
In file included from /core/workdir/UnpackedTarball/boost/boost/optional/optional.hpp:24:
In file included from /core/workdir/UnpackedTarball/boost/boost/core/addressof.hpp:15:
/core/external/boost/include/boost/config.hpp:11:32: warning: unknown warning group '-Wplacement-new', ignored [-Wunknown-warning-option]
#pragma GCC diagnostic ignored "-Wplacement-new"
                               ^
In file included from /core/svl/source/config/asiancfg.cxx:34:
In file included from /core/include/comphelper/configuration.hxx:15:
In file included from /core/external/boost/include/boost/optional.hpp:22:
In file included from /core/workdir/UnpackedTarball/boost/boost/optional.hpp:15:
In file included from /core/external/boost/include/boost/optional/optional.hpp:22:
In file included from /core/workdir/UnpackedTarball/boost/boost/optional/optional.hpp:29:
/core/external/boost/include/boost/static_assert.hpp:11:32: warning: unknown warning group '-Wplacement-new', ignored [-Wunknown-warning-option]
#pragma GCC diagnostic ignored "-Wplacement-new"
                               ^
In file included from /core/svl/source/config/asiancfg.cxx:34:
In file included from /core/include/comphelper/configuration.hxx:15:
In file included from /core/external/boost/include/boost/optional.hpp:22:
In file included from /core/workdir/UnpackedTarball/boost/boost/optional.hpp:15:
In file included from /core/external/boost/include/boost/optional/optional.hpp:22:
In file included from /core/workdir/UnpackedTarball/boost/boost/optional/optional.hpp:32:
In file included from /core/workdir/UnpackedTarball/boost/boost/type_traits/alignment_of.hpp:15:
In file included from /core/workdir/UnpackedTarball/boost/boost/type_traits/intrinsics.hpp:16:
In file included from /core/workdir/UnpackedTarball/boost/boost/type_traits/detail/config.hpp:15:
/core/external/boost/include/boost/version.hpp:11:32: warning: unknown warning group '-Wplacement-new', ignored [-Wunknown-warning-option]
#pragma GCC diagnostic ignored "-Wplacement-new"
                               ^
In file included from /core/svl/source/config/asiancfg.cxx:34:
In file included from /core/include/comphelper/configuration.hxx:15:
In file included from /core/external/boost/include/boost/optional.hpp:22:
In file included from /core/workdir/UnpackedTarball/boost/boost/optional.hpp:15:
In file included from /core/external/boost/include/boost/optional/optional.hpp:22:
In file included from /core/workdir/UnpackedTarball/boost/boost/optional/optional.hpp:47:
/core/external/boost/include/boost/none.hpp:11:32: warning: unknown warning group '-Wplacement-new', ignored [-Wunknown-warning-option]
#pragma GCC diagnostic ignored "-Wplacement-new"
                               ^
6 warnings generated.
Makefile:264: recipe for target 'build' failed
make: *** [build] Error 2