Update "git send-email" for issues noticed by PerlCritic.

* rr/send-email-perl-critique:
  send-email: use the three-arg form of open in recipients_cmd
  send-email: drop misleading function prototype
  send-email: use "return;" not "return undef;" on error codepaths

"git merge $(git rev-parse v1.8.2)" behaved quite differently from
"git merge v1.8.2" as if v1.8.2 were written as v1.8.2^0 and did
not pay much attention to the annotated tag payload.

This makes the code notice the type of the tag object, in addition
to the dwim_ref() based classification the current code uses
(i.e. the name appears in refs/tags/) to decide when to special
case merging of tags.

* jc/merge-tag-object:
  t6200: test message for merging of an annotated tag
  t6200: use test_config/test_unconfig
  merge: a random object may not necssarily be a commit

* maint:
  mailmap: update Pasky's address
  git-remote-mediawiki: new wiki URL in documentation

Eric Wong noticed that the address at suse.cz no longer works.
We may want to update in-code addresses as well, but let's do
this first in 'maint'.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

* nd/index-pack-threaded-fixes:
  index-pack: guard nr_resolved_deltas reads by lock
  index-pack: protect deepest_delta in multithread code

* jk/index-pack-correct-depth-fix:
  index-pack: always zero-initialize object_entry list

"submodule summary --summary-limit" option did not support
"--option=value" form.

* rs/submodule-summary-limit:
  submodule summary: support --summary-limit=<n>

* jk/peel-ref:
  upload-pack: load non-tip "want" objects from disk
  upload-pack: make sure "want" objects are parsed
  upload-pack: drop lookup-before-parse optimization

The Bibzball wiki is not maintained anymore.
Signed-off-by: NMatthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

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

There was no good way to ask "I have a random string that came from
outside world. I want to turn it into a 40-hex object name while
making sure such an object exists".  A new peeling suffix ^{object}
can be used for that purpose, together with "rev-parse --verify".

* jc/sha1-name-object-peeler:
  peel_onion(): teach $foo^{object} peeler
  peel_onion: disambiguate to favor tree-ish when we know we want a tree-ish

Update a test to match the documented interaction between pushURL
and pushInsteadOf.

* jc/t5516-pushInsteadOf-vs-pushURL:
  t5516: test interaction between pushURL and pushInsteadOf correctly

"submodule summary --summary-limit" option did not support
"--option=value" form.

* rs/submodule-summary-limit:
  submodule summary: support --summary-limit=<n>

Let us use not just memgrind but other *grind debuggers.

* tr/valgrind:
  tests: notice valgrind error in test_must_fail
  tests --valgrind: provide a mode without --track-origins
  tests: parameterize --valgrind option
  t/README: --valgrind already implies -v

The prompt string generator did not notice when we are in a middle
of a "git revert" session.

* rr/prompt-revert-head:
  bash: teach __git_ps1 about REVERT_HEAD

"git branch -m" without any argument noticed an error, but with an
incorrect error message.

* jm/branch-rename-nothing-error:
  branch: give better message when no names specified for rename

Add more logic to detect graphic environment of OS X by simply
checking TERM_PROGRAM has some value, not Apple_Terminal, to detect
iTerm.app and any other.

* js/iterm-is-on-osx:
  git-web--browse: recognize any TERM_PROGRAM as a GUI terminal on OS X

Have the streaming interface and other codepaths more carefully
examine for corrupt objects.

* jk/check-corrupt-objects-carefully:
  clone: leave repo in place after checkout errors
  clone: run check_everything_connected
  clone: die on errors from unpack_trees
  add tests for cloning corrupted repositories
  streaming_write_entry: propagate streaming errors
  add test for streaming corrupt blobs
  avoid infinite loop in read_istream_loose
  read_istream_filtered: propagate read error from upstream
  check_sha1_signature: check return value from read_istream
  stream_blob_to_fd: detect errors reading from stream

"git apply --whitespace=fix" was not prepared to see a line getting
longer after fixing whitespaces (e.g. tab-in-indent aka Python).

* jc/apply-ws-fix-tab-in-indent:
  test: resurrect q_to_tab
  apply --whitespace=fix: avoid running over the postimage buffer

Try to be careful when difftool backend allows the user to write
into the temporary files being shown *and* the user makes changes
to the working tree at the same time. One of the changes has to be
lost in such a case, but at least tell the user what he did.

* jk/difftool-no-overwrite-on-copyback:
  t7800: run --dir-diff tests with and without symlinks
  t7800: fix tests when difftool uses --no-symlinks
  t7800: don't hide grep output
  difftool: don't overwrite modified files
  t7800: move '--symlinks' specific test to the end

Fix 1.8.1.x regression that stopped matching "dir" (without
trailing slash) to a directory "dir".

* jc/directory-attrs-regression-fix:
  t: check that a pattern without trailing slash matches a directory
  dir.c::match_pathname(): pay attention to the length of string parameters
  dir.c::match_pathname(): adjust patternlen when shifting pattern
  dir.c::match_basename(): pay attention to the length of string parameters
  attr.c::path_matches(): special case paths that end with a slash
  attr.c::path_matches(): the basename is part of the pathname

Consolidate repeated pathspec matches on the same paths, while
fixing a bug in "git checkout dir/" code started from an unmerged
index.

* nd/checkout-paths-reduce-match-pathspec-calls:
  checkout: avoid unnecessary match_pathspec calls

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

Verification of signed tags were not done correctly when not in C
or en/US locale.

* mg/gpg-interface-using-status:
  pretty: make %GK output the signing key for signed commits
  pretty: parse the gpg status lines rather than the output
  gpg_interface: allow to request status return
  log-tree: rely upon the check in the gpg_interface
  gpg-interface: check good signature in a reliable way

'git commit -m "$msg"' used to add an extra newline even when
$msg already ended with one.

* bc/commit-complete-lines-given-via-m-option:
  Documentation/git-commit.txt: rework the --cleanup section
  git-commit: only append a newline to -m mesg if necessary
  t7502: demonstrate breakage with a commit message with trailing newlines
  t/t7502: compare entire commit message with what was expected

The "--match=<pattern>" option of "git describe", when used with
"--all" to allow refs that are not annotated tags to be used as a
base of description, did not restrict the output from the command to
those that match the given pattern.

* jc/describe:
  describe: --match=<pattern> must limit the refs even when used with --all

An aliased command spawned from a bare repository that does not say
it is bare with "core.bare = yes" is treated as non-bare by mistake.

* jk/alias-in-bare:
  setup: suppress implicit "." work-tree for bare repos
  environment: add GIT_PREFIX to local_repo_env
  cache.h: drop LOCAL_REPO_ENV_SIZE

When "format-patch" quoted a non-ascii strings on the header files,
it incorrectly applied rfc2047 and chopped a single character in the
middle of it.

* ks/rfc2047-one-char-at-a-time:
  format-patch: RFC 2047 says multi-octet character may not be split

"git archive" reports a failure when asked to create an archive out
of an empty tree.  It would be more intuitive to give an empty
archive back in such a case.

* jk/empty-archive:
  archive: handle commits with an empty tree
  test-lib: factor out $GIT_UNZIP setup

"git tag -f <tag>" always said "Updated tag '<tag>'" even when
creating a new tag (i.e. not overwriting nor updating).

* ph/tag-force-no-warn-on-creation:
  tag: --force does not have to warn when creating tags

"git cmd -- ':(top'" was not diagnosed as an invalid syntax, and
instead the parser kept reading beyond the end of the string.

* lf/setup-prefix-pathspec:
  setup.c: check that the pathspec magic ends with ")"
  setup.c: stop prefix_pathspec() from looping past the end of string

* maint-1.8.1:
  Start preparing for 1.8.1.6
  git-tag(1): we tag HEAD by default
  Fix revision walk for commits with the same dates
  t2003: work around path mangling issue on Windows
  pack-refs: add fully-peeled trait
  pack-refs: write peeled entry for non-tags
  use parse_object_or_die instead of die("bad object")
  avoid segfaults on parse_object failure
  entry: fix filter lookup
  t2003: modernize style
  name-hash.c: fix endless loop with core.ignorecase=true

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

* kb/name-hash:
  name-hash.c: fix endless loop with core.ignorecase=true

* kk/revwalk-slop-too-many-commit-within-a-second:
  Fix revision walk for commits with the same dates

* jk/checkout-attribute-lookup:
  t2003: work around path mangling issue on Windows
  entry: fix filter lookup
  t2003: modernize style

* jk/fully-peeled-packed-ref:
  pack-refs: add fully-peeled trait
  pack-refs: write peeled entry for non-tags
  use parse_object_or_die instead of die("bad object")
  avoid segfaults on parse_object failure

* ap/maint-diff-rename-avoid-overlap:
  tests: make sure rename pretty print works
  diff: prevent pprint_rename from underrunning input
  diff: Fix rename pretty-print when suffix and prefix overlap

* yd/doc-merge-annotated-tag:
  Documentation: merging a tag is a special case