This removes all fake apiset forwarders,
and handles apisets inside ntdll.
This is not 100% compatible with how windows does it, but it should be good enough for us.
which implements the required functionality.
ntdll and ntoskrnl now have a wrapper for this, with SEH.
This protects the function against malformed / bad images,
whilst still being able to use the code in freeldr et al.
Idea from Thomas.
CORE-14857