Windows: add guards for some methods that don't work/exist on windows#295

Tom-Willemsen wants to merge 2 commits intoDiamondLightSource:mainDiamondLightSource/FastCS:mainfrom

Tom-Willemsen:guard_methods_that_dont_work_on_windowsTom-Willemsen/FastCS:guard_methods_that_dont_work_on_windowsCopy head branch name to clipboard