sizes of yum metadata files

[Michal Jaegermann]

These files used to show up compressed with gzip.  It does not
seem to be the case for some time.  With sizes like

37M 0dc08d372184e56c71a32b6abbd6fbdd8eedfd3d-primary.sqlite
65M b860206f9cc245151e10625c725c8c2eb0145c31-filelists.sqlite

this makes a substantial difference on slower connections and not
everybody has T1.  A disk space starts to add up too.  Was this
change deliberate?  Even a default gzip compression shaves between
70 and 80 percent of these.

   Michal