Fourth batch for 2.14

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: gitster

Documentation/RelNotes/2.14.0.txt

@@ -44,6 +44,22 @@ UI, Workflows & Features
  * "git repack" learned to accept the --threads=<n> option and pass it
    to pack-objects.
 
+ * "git send-email" learned to run sendemail-validate hook to inspect
+   and reject a message before sending it out.
+   (merge 6489660b4b jt/send-email-validate-hook later to maint).
+
+ * There is no good reason why "git fetch $there $sha1" should fail
+   when the $sha1 names an object at the tip of an advertised ref,
+   even when the other side hasn't enabled allowTipSHA1InWant.
+
+ * The recently introduced "[includeIf "gitdir:$dir"] path=..."
+   mechansim has further been taught to take symlinks into account.
+   The directory "$dir" specified in "gitdir:$dir" may be a symlink to
+   a real location, not something that $(getcwd) may return.  In such
+   a case, a realpath of "$dir" is compared with the real path of the
+   current repository to determine if the contents from the named path
+   should be included.
+
 
 Performance, Internal Implementation, Development Support etc.
 
@@ -75,6 +91,24 @@ Performance, Internal Implementation, Development Support etc.
 
  * Conversion from uchar[20] to struct object_id continues.
 
+ * Simplify parse_pathspec() codepath and stop it from looking at the
+   default in-core index.
+   (merge 08de9151a8 bw/pathspec-sans-the-index later to maint).
+
+ * Add perf-test for wildmatch.
+   (merge 62ca75a6b9 ab/perf-wildmatch later to maint).
+
+ * Code from "conversion using external process" codepath has been
+   extracted to a separate sub-process.[ch] module.
+   (merge 4f2a2e9f0e bp/sub-process-convert-filter later to maint).
+
+ * When "git checkout", "git merge", etc. manipulates the in-core
+   index, various pieces of information in the index extensions are
+   discarded from the original state, as it is usually not the case
+   that they are kept up-to-date and in-sync with the operation on the
+   main index.  The untracked cache extension is copied across these
+   operations now, which would speed up "git status" (as long as the
+   cache is properly invalidated).
 
 
 Also contains various documentation updates and code clean-ups.
@@ -209,6 +243,26 @@ notes for details).
    should silently be ignored instead)
    (merge a3ba6bf10a jk/ignore-broken-tags-when-ignoring-missing-links later to maint).
 
+ * "git describe --contains" penalized light-weight tags so much that
+   they were almost never considered.  Instead, give them about the
+   same chance to be considered as an annotated tag that is the same
+   age as the underlying commit would.
+   (merge ef1e74065c jc/name-rev-lw-tag later to maint).
+
+ * The "run-command" API implementation has been made more robust
+   against dead-locking in a threaded environment.
+   (merge e3f43ce765 bw/forking-and-threading later to maint).
+
+ * A recent update to t5545-push-options.sh started skipping all the
+   tests in the script when a web server testing is disabled or
+   unavailable, not just the ones that require a web server.  Non HTTP
+   tests have been salvaged to always run in this script.
+   (merge 2e397e4ddf jc/skip-test-in-the-middle later to maint).
+
+ * "git send-email" now uses Net::SMTP::SSL, which is obsolete, only
+   when needed.  Recent versions of Net::SMTP can do TLS natively.
+   (merge 0ead000c3a dk/send-email-avoid-net-smtp-ssl-when-able later to maint).
+
  * Other minor doc, test and build updates and code cleanups.
    (merge 515360f9e9 jn/credential-doc-on-clear later to maint).
    (merge 0e6d899fee ab/aix-needs-compat-regex later to maint).
@@ -217,3 +271,4 @@ notes for details).
    (merge c8f7c8b704 tb/dedup-crlf-tests later to maint).
    (merge 449456ad47 sg/core-filemode-doc-typofix later to maint).
    (merge ba4dce784e km/log-showsignature-doc later to maint).
+   (merge c5a9157393 jh/memihash-opt later to maint).