Merge branch 'maint'

* maint:
  Document accumulated fixes since 1.7.9.2
  Git 1.7.8.5
  grep -P: Fix matching ^ and $
  am: don't infloop for an empty input file
  rebase -m: only call "notes copy" when rewritten exists and is non-empty
  git-p4: remove bash-ism in t9800
  git-p4: remove bash-ism in t9809
  git-p4: fix submit regression with clientSpec and subdir clone
  git-p4: set useClientSpec variable on initial clone
  Makefile: add thread-utils.h to LIB_H

Conflicts:
	RelNotes
	t/t9809-git-p4-client-view.sh

Documentation/RelNotes/1.7.10.txt

@@ -87,15 +87,6 @@ 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).
 
- * The config.mak.autogen generated by optional autoconf support tried
-   to link the binary with -lintl even when libintl.h is missing from
-   the system.
-   (merge a8356d4 js/configure-libintl later to maint).
-
- * "git add --refresh <pathspec>" used to warn about unmerged paths
-   outside the given pathspec.
-   (merge 3d1f148 jc/add-refresh-unmerged later to maint).
-
  * "gitweb" used to drop warnings in the log file when "heads" view is
    accessed in a repository whose HEAD does not point at a valid
    branch.

Documentation/RelNotes/1.7.8.5.txt

@@ -0,0 +1,19 @@
+Git v1.7.8.5 Release Notes
+==========================
+
+Fixes since v1.7.8.4
+--------------------
+
+ * Dependency on our thread-utils.h header file was missing for
+   objects that depend on it in the Makefile.
+
+ * "git am" when fed an empty file did not correctly finish reading it
+   when it attempts to guess the input format.
+
+ * "git grep -P" (when PCRE is enabled in the build) did not match the
+   beginning and the end of the line correctly with ^ and $.
+
+ * "git rebase -m" tried to run "git notes copy" needlessly when
+   nothing was rewritten.
+
+Also contains minor fixes and documentation updates.

Documentation/RelNotes/1.7.9.3.txt

@@ -0,0 +1,17 @@
+Git v1.7.9.3 Release Notes
+==========================
+
+Fixes since v1.7.9.2
+--------------------
+
+ * "git p4" (in contrib/) submit the changes to a wrong place when the
+   "--use-client-spec" option is set.
+
+ * The config.mak.autogen generated by optional autoconf support tried
+   to link the binary with -lintl even when libintl.h is missing from
+   the system.
+
+ * "git add --refresh <pathspec>" used to warn about unmerged paths
+   outside the given pathspec.
+
+Also contains minor fixes and documentation updates.