Sync with maint

Documentation/RelNotes/1.7.9.2.txt

+Git v1.7.9.2 Release Notes
+==========================
+
+Fixes since v1.7.9.1
+--------------------
+
+* The error message emitted when we see an empty loose object was
+  not phrased correctly.
+
+* The code to ask for password did not fall back to the terminal
+  input when GIT_ASKPASS is set but does not work (e.g. lack of X
+  with GUI askpass helper).
+
+* map_user() was not rewriting its output correctly, which resulted
+  in the user visible symptom that "git blame -e" sometimes showed
+  excess '>' at the end of email addresses.
+
+* "git checkout -b" did not allow switching out of an unborn branch.
+
+* "git commit" refused to create a commit when entries added with
+  "add -N" remained in the index, without telling Git what their content
+  in the next commit should be. We should have created the commit without
+  these paths.
+
+* Search box in "gitweb" did not accept non-ASCII characters correctly.
+
+Also contains minor fixes and documentation updates.

Documentation/git.txt

@@ -9,11 +9,11 @@ git - the stupid content tracker
 SYNOPSIS
 --------
 [verse]
-'git' [--version] [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
+'git' [--version] [--help] [-c <name>=<value>]
+    [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
     [-p|--paginate|--no-pager] [--no-replace-objects] [--bare]
     [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]
-    [-c <name>=<value>]
-    [--help] <command> [<args>]
+    <command> [<args>]
 
 DESCRIPTION
 -----------

contrib/completion/git-completion.bash

@@ -1137,7 +1137,7 @@ _git_branch ()
 		__gitcomp "
 			--color --no-color --verbose --abbrev= --no-abbrev
 			--track --no-track --contains --merged --no-merged
-			--set-upstream --edit-description
+			--set-upstream --edit-description --list
 			"
 		;;
 	*)