The main source of warnings was the use of `%d` for printing a
templated type `T`, where `T` could be any cl_ scalar or vector type.
Introduce `print_expected_obtained`. It takes const references to
handle alignment of the cl_ types.
Define `operator<<` for all types used by the subgroup tests. Ideally
those would be template functions enabled by TypeManager data, but
that requires some more work on the TypeManager (which we'd ideally do
after more warnings have been enabled). So for now, define the
`operator<<` instances using preprocessor defines.
Also fix a few instances where the wrong format specifier was used for
`size_t` types.
Signed-off-by: Sven van Haastregt <sven.vanhaastregt@arm.com>
Signed-off-by: Sven van Haastregt <sven.vanhaastregt@arm.com>