scripts/check-cvs-add: Check the repository and not the filesystem

Stop using the check-conf script and instead compare the lists of
cached/committed files with the series.conf content.
README: Update to document typical patch naming
scripts/run_oldconfig.sh: Map any ppc* config to "powerpc"
scripts/tar-up*.sh: Only cache the locally generated linux tarball

Also, when using the official tarball, preserve the timestamp.
sunrpc: create a new dummy pipe for gssd to hold open
(bnc#866437).
sunrpc: replace sunrpc_net->gssd_running flag with a more
reliable check (bnc#866437).
nfs: check if gssd is running before attempting to use krb5i
auth in SETCLIENTID call (bnc#866437).
rpc_pipe: remove the clntXX dir if creating the pipe fails
(bnc#866437).
sunrpc: add an "info" file for the dummy gssd pipe (bnc#866437).
rpc_pipe: fix cleanup of dummy gssd directory when notification
fails (bnc#866437).
Merge remote-tracking branch 'origin/scripts' into stable