Adding gitweb.owner, last shot

After some study about the insertion of a new repository configuration,
which sets repository owner, it was decided by the group that creating
another small file inside .git/ is not a good idea. So I started to bench
the viability to add just the gitweb.owner configuration, using gitweb.owner
together with gitweb.description there is no major performance downgrade
compared to $projects_list , as seen below:

8<-------
These times i got with a 1000projects running 2 dd to generate disk IO.
Here comes the resultm
NO projects_list  projects_list
16m30s69          15m10s74       default gitweb, using FS's owner
16m07s40          15m24s34       patched to get gitweb.owner
16m37s76          15m59s32       same above, but without gitweb.owner

Now results for a 1000projects on an idle machine.
NO projects_list  projects_list
1m19s08           1m09s55       default gitweb, using FS's owner
1m17s58           1m09s55       patched to get gitweb.owner
1m18s49           1m08s96       same above, but without gitweb.owner
8<-------

The idea of creating only the gitweb.owner can be a case of study to
centralize all gitweb repository configuration in one file. Maybe even
change the way $projects_list is formated, as gitweb.cgi needs to check
repository configuration to get repository description to generate
projecT_list page, we could just list repository's directories.