GIT 1.5.4-rc1

It's been a week since -rc0, and we have quite a lot of fixes,
so here it is.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/.mailmap b/.mailmap
index 1f729c2..695739e 100644
--- a/.mailmap
+++ b/.mailmap
@@ -25,6 +25,7 @@
 Kent Engstrom <kent@lysator.liu.se>
 Lars Doelle <lars.doelle@on-line ! de>
 Lars Doelle <lars.doelle@on-line.de>
+Li Hong <leehong@pku.edu.cn>
 Lukas Sandström <lukass@etek.chalmers.se>
 Martin Langhoff <martin@catalyst.net.nz>
 Michael Coleman <tutufan@gmail.com>