[PATCH] resolv/resolv.h: allow alternative resolv.conf files

[Florian Weimer]

My main concern at this point is that a lot of software hard-codes the 
/etc/resolv.conf path and parses the file on its own, to obtain the 
search path and the configured name servers.

Once we add an environment variable to change the path, that's going to 
add a lot of confusion because the system will have an inconsistent view 
on the data.  I do not have a good answer to that.

Thanks,
Florian