Write up rename on entry

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
Ignore tix files.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
Duplicate word
Merge remote-tracking branch 'origin/master' into ppc64-ncg
Merge branch 'master' of git://git.haskell.org/ghc into ppc64-ncg