[PATCH] - libstore: Add prefix @ to device to pass master device

For compatibility with rump disk drivers, we need a way to pass the master device through the `-T typed device:` parameter of storeio. Instead of adding a new field, this patch allows the device field to be of the form: @/path/to/master:/path/to/device So for example, with this patch I

[PATCH] - ext2fs: Fix fast symlinks created by linux in hurd

Previously on an ext2 partition, any small symlink would be broken in hurd when created by linux. I noticed this because I tried to rsync my / offline (in linux) to another disk and hurd was subsequently unable to read any of the small symlinks. This patch makes hurd correctly read fast symlinks