[L10N] Kickoff for Git 2.16.0 l10n round 2

Hi,

Git 2.16.0-rc1 introduced 8 update messages, and let's start the 2nd round of l10n for Git 2.16.0.

The new "git.pot" is generated from Git 2.16.0-rc1:

    l10n: git.pot: v2.16.0 round 2 (8 new, 4 removed)

    Generate po/git.pot from v2.16.0-rc1 for git v2.16.0 l10n round 2.

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

You can get it from the usual place:

    https://github.com/git-l10n/git-po/

As how to update your XX.po and help to translate Git, please see "Updating a XX.po file" and other sections in "po/README" file.

-- Jiang Xin