[PATCH 0/7] Rework diff options

This patch series cleans up diff output format options.

This makes it possible to use any combination of --raw, -p, --stat and --summary options and they work as you would expect.

These patches passed all test and are for the next branch. Patches 6 and 7 are optional.

 b/builtin-diff-files.c  |   10 --
 b/builtin-diff-index.c  |    3 
 b/builtin-diff-stages.c |    3 
 b/builtin-diff-tree.c   |    3 
 b/builtin-diff.c        |   62 +++----------
 b/builtin-log.c         |   13 +-
 b/combine-diff.c        |   55 +++++------
 b/diff.c                |  221 +++++++++++++++++++++++-------------------------
 b/diff.h                |   27 +++--
 b/log-tree.c            |   10 +-
 b/revision.c            |    4 
 11 files changed, 189 insertions(+), 222 deletions(-)