Work around GCC bug
Work around GCC bug

	* Vc/common/simdarray.h: Change `= Flags()` to `= {}` which has
	the same effect but avoids "error: invalid use of template type
	parameter ‘Flags’".

VcDevel/Vc,VcDevel/Vc,VcDevel/Vc,VcDevel/Vc