Fix TAGSET_INCLUDES macro to work properly with multiple bit flags
Fix TAGSET_INCLUDES macro to work properly with multiple bit flags

It was just using the equality operator to naively check the value, but
that doesn't actually work with the bit flag scheme unless only 1 flag
is set. As mentioned in commit a4a743309247c7ede6d080245389eef4f50072a3,
that isn't always the case.

rubys/nokogumbo,rubys/nokogumbo,rubys/nokogumbo,rubys/nokogumbo