These files are copied from <https://github.com/nxg/lcut>,
which is a fork of <https://github.com/bigwhite/lcut>,
with fixes included in the pull request at <https://github.com/bigwhite/lcut/pull/2>

lcut has an Apache 2.0 licence.

Tests:
    LCUT_INT_EQUAL(tc, expected, actual)
    LCUT_INT_NEQUAL(tc, expected, actual)
    LCUT_STR_EQUAL(tc, expected, actual)
    LCUT_STR_NEQUAL(tc, expected, actual)
    LCUT_ASSERT(tc, msg, condition)
    LCUT_TRUE(tc, condition)

