Sync with maint

diff --cc Documentation/RelNotes/1.7.10.txt
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--- 1/Documentation/RelNotes/1.7.10.txt
--- /dev/null
+++ b/Documentation/RelNotes/1.7.10.txt
@@@ -1,107 -1,0 +1,71 @@@
-  * When "git push" fails to update any refs, the client side did not
-    report an error correctly to the end user.
-    (merge 5238cbf sp/smart-http-failure-to-push later to maint).
- 
-  * "git push -q" was not sufficiently quiet.
-    (merge d336572 cb/push-quiet later to maint).
- 
-  * "git log --first-parent $pathspec" did not stay on the first parent
-    chain and veered into side branch from which the whole change to the
-    specified paths came.
-    (merge 36ed191 jc/maint-log-first-parent-pathspec later to maint).
- 
-  * Subprocesses spawned from various git programs were often left running
-    to completion even when the top-level process was killed.
-    (merge 10c6cdd cb/maint-kill-subprocess-upon-signal later to maint).
- 
-  * "git mergetool" now gives an empty file as the common base version
-    to the backend when dealing with the "both sides added, differently"
-    case.
-    (merge ec245ba da/maint-mergetool-twoway later to maint).
- 
-  * "git submodule add $path" forgot to recompute the name to be stored
-     in .gitmodules when the submodule at $path was once added to the
-     superproject and already initialized.
-    (merge 1017c1a jl/submodule-re-add later to maint).
- 
-  * Using "git grep -l/-L" together with options -W or --break may not
-    make much sense as the output is to only count the number of hits
-    and there is no place for file breaks, but the latter options made
-    "-l/-L" to miscount the hits.
-    (merge 50dd0f2 tr/grep-l-with-decoration later to maint).
- 
-  * When asking for a tag to be pulled, "request-pull" shows the name
-    of the tag prefixed with "tags/"
-    (merge 2ad9ba0 jc/maint-request-pull-for-tag later to maint).
- 
 +Git v1.7.10 Release Notes
 +=========================
 +
 +Updates since v1.7.9
 +--------------------
 +
 +UI, Workflows & Features
 +
 + * Improved handling of views, labels and branches in git-p4 (in contrib).
 +
 + * "vcs-svn"/"svn-fe" learned to read dumps with svn-deltas and
 +   support incremental imports.
 +
 + * "git am" learned to pass "-b" option to underlying "git mailinfo", so
 +   that bracketed string other than "PATCH" at the beginning can be kept.
 +
 + * "git clone" learned "--single-branch" option to limit cloning to a
 +   single branch (surprise!).
 +
 + * "git clone" learned to detach the HEAD in the resulting repository
 +   when the source repository's HEAD does not point to a branch.
 +
 + * When showing a patch while ignoring whitespace changes, the context
 +   lines are taken from the postimage, in order to make it easier to
 +   view the output.
 +
 + * "git merge" in an interactive session learned to spawn the editor
 +   by default to let the user edit the auto-generated merge message,
 +   to encourage people to explain their merges better. Legacy scripts
 +   can export MERGE_AUTOEDIT=no to retain the historical behaviour.
 +
 + * "gitweb" allows intermediate entries in the directory hierarchy
 +   that leads to a projects to be clicked, which in turn shows the
 +   list of projects inside that directory.
 +
 +Performance
 +
 + * During "git upload-pack" in respose to "git fetch", unnecessary calls
 +   to parse_object() have been eliminated, to help performance in
 +   repositories with excessive number of refs.
 +
 +Internal Implementation
 +
 + * Recursive call chains in "git index-pack" to deal with long delta
 +   chains have been flattened, to reduce the stack footprint.
 +
 + * Use of add_extra_ref() API is slowly getting removed, to make it
 +   possible to cleanly restructure the overall refs API.
 +
 + * The test suite supports the new "test_pause" helper function.
 +
 + * t/Makefile is adjusted to prevent newer versions of GNU make from
 +   running tests in seemingly random order.
 +
 +Also contains minor documentation updates and code clean-ups.
 +
 +
 +Fixes since v1.7.9
 +------------------
 +
 +Unless otherwise noted, all the fixes since v1.7.9 in the maintenance
 +releases are contained in this release (see release notes to them for
 +details).
 +
 +---
 +exec >/var/tmp/1
 +O=v1.7.9-187-gdc347e9
 +echo O=$(git describe)
 +git log --first-parent --oneline ^maint $O..
 +echo
 +git shortlog --no-merges ^maint $O..