Git 1.8.4-rc4

As we had to revert two topics at the last minute, let's have
another (hopefully short) round of rc to make sure the final release
will be sound.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Typofix draft release notes to 1.8.4

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Git 1.8.4

Signed-off-by: Junio C Hamano <gitster@pobox.com>
l10n: fr.po hotfix for commit 6b388fc

Fix many typos and add some new translations: fr.po: 1277/2080 messages translated

Signed-off-by: Sebastien Helleu <flashcode@flashtux.org>