larfx: apply Householder reflector, unrolled

Functions
subroutine	clarfx (side, m, n, v, tau, c, ldc, work)
	CLARFX applies an elementary reflector to a general rectangular matrix, with loop unrolling when the reflector has order ≤ 10.
subroutine	dlarfx (side, m, n, v, tau, c, ldc, work)
	DLARFX applies an elementary reflector to a general rectangular matrix, with loop unrolling when the reflector has order ≤ 10.
subroutine	slarfx (side, m, n, v, tau, c, ldc, work)
	SLARFX applies an elementary reflector to a general rectangular matrix, with loop unrolling when the reflector has order ≤ 10.
subroutine	zlarfx (side, m, n, v, tau, c, ldc, work)
	ZLARFX applies an elementary reflector to a general rectangular matrix, with loop unrolling when the reflector has order ≤ 10.

Detailed Description