NextMultipleOf

Returns the first multiple of specified multiple greater or equal to the specified value.

Parameters:

	multiple	the multiple to align the value with
	value	for which the smallestmulitple must be returned.

Returns:

the smallest multiple of the specified multiple greater or equal to the specified value.

Note:

No overflow checking is done.

( 8, 15 ) == 16, and NextMultipleOf( 8, 16 ) == 16.