Bug#115503: texi2dvi: source file directory included in search path

[Florian Weimer <fw@deneb.enyo.de>]

* Hilmar Preuße:

>> texi2dvi includes the source file directory in the TeX search path.
>> This is quite unusual for programs processing -I options (such as C
>> compilers), and even makeinfo doesn't do that.  Furthermore, it's not
>> possible to remove that directory from the search path.
>> 
> Could you check if the issue has been solved in the meantime?

I haven't used Aegis in many, many years, so this no longer impacts
me.  Looking at the texi2dvi script, the issue is still present, but
as Eli explained, it has to behave this way.