precompiled headers and -I- resp. iquote

[Ralf Wildenhues]

I've filed bugs..

* Ralf Wildenhues wrote on Wed, Jan 19, 2005 at 10:02:10AM CET:
>
> in gcc docs.  (Side note: documentation did not even reveal the
> feature that you could put several versions into a foo.h.gch
> directory and have gcc pick an appropriate one by itself).

#19540 and

> - require all use of #include "foo.h" in source files from different
>   directories.

#19541 for these issues.

Regards,
Ralf