lvm2: symlink individual tools to lvm  binary

Signed-off-by: Maxim Storchak <m.storchak@gmail.com>
lvm2: strip lvm.conf, ipk size down by ~20k

Signed-off-by: Maxim Storchak <m.storchak@gmail.com>
Merge pull request #648 from mstorchak/lvm2

lvm2 improvements