Bug#827199: hfst: FTBFS: twolc test fails on big-endian systems

[Aaron M. Ucko]

Source: hfst
Version: 3.10.0~r2798-2
Severity: serious
Justification: fails to build from source (but built successfully in the past)

Thanks for taking care of the twolc errors I reported in #826659.  The
twolc test now succeeds on little-endian systems, and no longer hangs
anywhere, but still fails on big-endian architectures (mips, powerpc,
s390x, and several non-release architectures).  I don't have further
details, but perhaps you can reproduce the problem on a porterbox.
Could you please take a look?

Thanks!