[Yum] clarification of some yum.conf settings

[seth vidal]

> 1) do settings like cachedir and logfile have default values?
>    it's not completely clear from "man yum.conf".


defaults for everything - line 63-91 of config.py
        #defaults
        self.cachedir = '/var/cache/yum'
        self.debuglevel = 2
        self.logfile = '/var/log/yum.log'
        self.pkgpolicy = 'newest'
        self.assumeyes = 0
        self.errorlevel = 2
        self.cache = 0
        self.uid = 0
        self.yumversion = 'unversioned'
        self.commands = None
        self.exactarch = 0
        self.overwrite_groups = 0
        self.groups_enabled = 0
        self.diskspacecheck = 1
        self.tolerant = 0
        self.yumvar = self._getEnvVar()
        self.distroverpkg = 'redhat-release'
        self.yumvar['basearch'] = archwork.getArch()
        self.yumvar['arch'] = os.uname()[4]
        self.bandwidth = None
        self.throttle = None
        self.retries = 6
        self.progress_obj = progress_meter.text_progress_meter(fo=sys.stdout)
        self.installroot = '/'
        self.installonlypkgs = ['kernel', 'kernel-bigmem', 'kernel-enterprise',
                           'kernel-smp', 'kernel-debug', 'kernel-unsupported']
        self.kernelpkgnames = ['kernel','kernel-smp','kernel-enterprise',
                           'kernel-bigmem','kernel-BOOT']



> 3) should the explanation of "distroverpkg" be updated to reflect
>    a default value of "fedora-release" instead of "redhat-release"?
>    (given that, technically speaking, "redhat-release" is not the
>    name of the package and therefore makes little sense as a 
>    default value for this setting anyway).

it doesn't default to fedora-release. It defaults to redhat-release but
it looks for packages PROVIDING redhat-release, not just named
redhat-release.


-sv