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.
* Remove the hacky find_actctx_dll form ldr that was taken from wine. LdrpResolveDllName and LdrpCheckForLoadedDll should get a parameter that is already redirected.
* Use RtlDosApplyFileIsolationRedirection_Ustr in LdrpLoadImportModule and LdrpUpdateLoadCount3 to redirerect the input parameter.