We fully specialize QTypeInfo for most C++ built-in types,
but enums and extended integral types (like GCC's int128_t)
were not covered.
Now that we depend on <type_traits>, we can stop pessimizing
enums and extended integral types in QVector and QVLA by
defaulting QTypeInfo::isComplex to true for such types.
Fix a test that checked that enums were complex types. This should
have been a XFAIL test. Enums are not complex types.
Change-Id: Ibb0fb38cc83e980a428b5573d1db5666593418ae
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>