[fpc-pascal] Bit manipulation helpers

[Ryan Joseph]

> On Feb 21, 2022, at 7:31 PM, Michael Van Canneyt via fpc-pascal <fpc-pascal at lists.freepascal.org> wrote:
> 
> Hm. I'm not sure that this code does what you need.
> 
> But masking is indeed not in the helpers.
> 

Try it yourself, it does indeed work. How else are you supposed to test these kinds of bit flag APIs where all the flags are OR'd  together into an LongWord? A type helper would be great because clearly this stuff is hard to remember.

Regards,
	Ryan Joseph