[tex-k] header special extension proposal

[Hendri Adriaens]

Hi Akira,

> Files are also searched for by using TEXINPUTS (TEXPICTS if defined)
> only in the extended case, by applying the following patch.
> (Others are minor fixes.)

Yeah, using this only in the extended case was the solution to avoid
problems for existing documents and packages that I only thought about just
after sending the previous mail...

Thanks a lot for the updated patch! I hope that Karl can find some time
again to put this in. Thanks already Karl!

Best regards,
-Hendri.