It was a mistake when I decided to make Waffle's attribute lists 32-bit.
Instead, the lists should have had type intptr_t[] to allow pointer
input-output.  To correct that original mistake, I will soon introduce
some new public functions that have `intptr_t attrib_list[]` parameters.

I'm deprecating the waffle_attrib_list functionss because I don't want
to maintain two variants (int32_t and intptr_t) of each function. They
offer little utility to users, so I see little benefit in trying
maintain both variants.

Signed-off-by: Chad Versace <chad.versace@intel.com>
Tested-by: Emil Velikov <emil.l.velikov@gmail.com> (msvc/wgl)
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>