l10n: git.pot: v2.2.0 round 2 (1 updated)

Generate po/git.pot from v2.2.0-rc2-23-gca0107e for git v2.2.0 l10n
round 2.

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
l10n: batch updates for one trivial change

In order to catch up with the release of Git 2.2.0 final, make a batch
l10n update for the new l10n change brought by commit d52adf1 (trailer:
display a trailer without its trailing newline).

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
l10n: de.po: translate 2 new messages

Signed-off-by: Phillip Sz <phillip.szelat@gmail.com>
Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
l10n: de.po: translate 2 messages

Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
l10n: remove a superfluous translation for push.c

Ralf reported that '--recurse-submodules' option in push.c should not be
translated [1].  Before his commit is merged, remove superfluous
translations for push.c.

[1] http://www.spinics.net/lists/git/msg241964.html

Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
Git 2.2.0-rc3

Signed-off-by: Junio C Hamano <gitster@pobox.com>
pager: save the original stderr when redirecting to pager

When we redirect stdout to the pager, we also redirect
stderr (if it would otherwise go to the terminal) so that
error messages do not get overwritten by the pager.

However, some stderr output may still want to go to the
terminal, because they are time-sensitive (like progress
reports) and should be overwritten by the pager.

This patch stashes away the original stderr descriptor and
creates a new stdio buffer for it.
progress: use pager's original_stderr if available

If we are outputting to a pager, stderr is redirected to the
pager. However, progress messages should not be part of that
stream, as they are time-sensitive and should end up being
hidden once we actually have output.
show: turn on rename detection progress reporting

For large commits, it is nice to have some eye candy for the
rename detection.

However, because show can display multiple commits, we have
to be careful not to clutter existing output. We show the
progress report only before we have generated any actual
output; once we have sent output to the terminal or pager,
we turn off progress reporting.

This also makes it safe to use with "git log", though it
will only be useful if the first commit is the slow one.
So this patch actually enables it for all of the
log/whatchanged/show/reflog family.

We also handle the usual --{no-}progress option and check
that stderr goes to a terminal before turning on progress.
diff: turn on rename detection progress reporting

Since all of the progress happens before we generate any
output, this looks OK, even when output goes to a pager.
We do the usual --progress/--no-progress options and check
isatty(2) to enable the feature.

The argument parsing is a little ad-hoc, but we currently
have no parse-options infrastructure here at all.  However,
it should be safe to parse like this, because the prior
call to setup_revisions will have removed any options that
take an argument, and our parsing removes --progress from
argv for later parsers. The one exception is diff_no_index,
which may get called early, and needs to learn to ignore
--progress.