[Yum] repository verification

[Karsten Jeppesen]

This one is just one for the wish-list:

For my purpose there are 4 repositories to select out of a larger pool 
of mirrors.

However - none of the mirrors carry all 4 repositories.

And to make things worse: Some mirrors do not have correct permissions 
set for the different directories.

And most of this is outside my control.

To make it easier on my customers I wrote a little shell script which 
extract the possible mirrors from Yellowdoglinuxs mirror page.
It then proceeds to select the fastest mirror by downloading the 
header.info file.
That works well, but doesn't guard against that one of the faster 
mirrors has an error in the permissions for the rpm directory.

What I would like is if yum-arch left a known dummy file (dummy.yum?) 
of ex 50K in each directory. Download of this file would guaranty that 
the directory is present and accessible.

Karsten