[PATCH v4 0/6] "git reset --merge" related improvements

This is a reroll of a previous series from last september:

http://thread.gmane.org/gmane.comp.version-control.git/128706/focus=128707

The changes in this reroll are the following:

- new option was renamed "--keep-local-changes" instead of "--merge-safe",
- some test cases have been added,
- a bug was fixed (head_sha1 is now "unsigned char head_sha1[20]"),
- I took ownership of the third patch,
- some commit messages were improved,
- there are 2 new documentation patches at the end,
- the last documentation patch adds some tables about what all the reset
options are doing in the different cases.

The new option name is "--keep-local-changes" because that's what
Junio used in the last email of the previous discussion, but my
opinion is that it is a bit long and so I'd like to rename it "--keep"
or another such short name.

Christian Couder (5):
  reset: add a few tests for "git reset --merge"
  reset: add option "--keep-local-changes" to "git reset"
  reset: add test cases for "--keep-local-changes" option
  Documentation: reset: describe new "--keep-local-changes" option
  Documentation: reset: add some tables to describe the different
    options

Stephan Beyer (1):
  reset: use "unpack_trees()" directly instead of "git read-tree"

 Documentation/git-reset.txt |   80 ++++++++++++++++++++++-
 builtin-reset.c             |   81 ++++++++++++++++++-----
 t/t7110-reset-merge.sh      |  156 +++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 300 insertions(+), 17 deletions(-)
 create mode 100755 t/t7110-reset-merge.sh