Linux 3.9 rc6

Things seem to be on track, and it's been a mostly boring week. Lots
of small fixes, a few reverts. Networking, some small arch fixes (arm,
mips, s390, alpha, tile, x86), drivers, minor filesystem updates
(gfs2, ext4, tiny reiserfs xattr fix). Nothing really exciting stands
out, I think the appended ShortLog gives a good overview for people
who want to wallow in the details..

Things seem to be on track, which means that unless something comes
up, rc7 will probably be the last rc as usual,