- replace caching-nameserver with bind-config sub-package
    - fix bug 181730: fix creation of named user & gid
    - fix bug 177595: handle case where $ROOTDIR is a link in initscript
    - fix bug 177001: bind-config creates symlinks OK now
    - fix bug 176388: named.conf is now never replaced by any RPM
    - fix bug 176246: remove unecessary creation of rpmsave links
    - fix bug 174925: no replacement of named.conf
    - fix bug 173963: existing named.conf never modified
    - major .spec file cleanup