New sparse_dd

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
add missing file

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
vhd depends on uuidm

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
vhd depends on camlp4

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
vhd-tool requires obuild

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
typo in vhd-tool spec file

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
Merge pull request #241 from djs55/new-sparse_dd

Update to new sparse_dd