Lower output threshold of libAfterImage

[Sasha Vasko]

Martin von Gagern wrote:
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> Hi!
> 
> I updated to 8.8 with libAfterImage support and got this message on the
> command line where I started urxvt:
>   (null) : image path is "(null)".
> I traced this to a call of create_generic_imageman. Looking at the
> source code of libAfterImage, I noticed that this output did not depend
> on the argument, but only on some output threshold within libAI. While
> giving progress informations might make sense for applications dealing
> in graphics mainly, doing so seems of little use for rxvt-unicode.
> 
> The attached patch lowers the output threshold one notch, disabling
> progress output while keeping warning and error messages.

Thanks! Commited your patch to CVS.

Sasha Vasko