Log Message:
Update to 2019-09-03

Changes from upstream:

	Round DDR4 speed properly

	The cycle time of high-speed memory modules is stored rounded. We
	already have a heuristic to un-round it and display the expected
	speed for DDR3 modules. Use the same heuristic for DDR4.

	For example this will make PC4-17000 memory properly displayed as
	operating at 2133 MHz instead of 2132 MHz. As a side effect, this
	fixes a bug where the maximum speed wouldn't be listed in section
	"Timings at Standard Speeds" if it had been computed incorrectly
	due to the rounded cycle time.