w32: Fix compilation and replace non-portable usage of ulong ulong is undefined for w32 (and maybe other) compilations. Replace it by uintptr_t (which also fixes compilation for w64 and is a better choice for pointer to integer conversions). Cc: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Stefan Weil <weil@mail.berlios.de> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Alexander Graf <agraf@suse.de>