Fixes since v1.6.1
------------------
+* "git add frotz/nitfol" when "frotz" is a submodule should have errored
+ out, but it didn't.
+
* "git apply" took file modes from the patch text and updated the mode
bits of the target tree even when the patch was not about mode changes.
+* "git bisect view" on Cygwin did not launch gitk
+
* "git checkout $tree" did not trigger an error.
+* "git commit" tried to remove COMMIT_EDITMSG from the work tree by mistake.
+
* "git describe --all" complained when a commit is described with a tag,
which was nonsense.
+* "git diff --no-index --" did not trigger no-index (aka "use git-diff as
+ a replacement of diff on untracked files") behaviour.
+
+* "git format-patch -1 HEAD" on a root commit failed to produce patch
+ text.
+
+* "git fsck branch" did not work as advertised; instead it behaved the same
+ way as "git fsck".
+
* "git log --pretty=format:%s" did not handle a multi-line subject the
same way as built-in log listers (i.e. shortlog, --pretty=oneline, etc.)
* "git mv -k" with more than one errorneous paths misbehaved.
+* "git read-tree -m -u" hence branch switching incorrectly lost a
+ subdirectory in rare cases.
+
* "git rebase -i" issued an unnecessary error message upon a user error of
marking the first commit to be "squash"ed.
-Other documentation updates.
-
----
-exec >/var/tmp/1
-O=v1.6.1-47-g914186a
-echo O=$(git describe maint)
-git shortlog --no-merges $O..maint
+* "git shortlog" did not format a commit message with multi-line
+ subject correctly.
+Many documentation updates.