C/C++ permits to use || and && (logical OR and logical AND) for
floating-point and complex scalars; those evaluated unequal zero
and the result is of type 'int' with value 0 or 1.

While || and && with floating-point numbers is somewhat sensible,
it does not really make sense to use a non-bool/non-integer as
reduction variable – but as C/C++ permits this and OpenMP follows
the base language, this patch implements it.

OK for mainline?

Tobias

PS: The https://github.com/clang-ykt/omptests testsuite uses it
and this patch silences 1008 'error:' lines.

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