[Libguestfs] [PATCH v2] launch: Error if you try to launch with too many drives.

[Richard W.M. Jones]

v1 was here:

  https://www.redhat.com/archives/libguestfs/2017-April/msg00268.html

v1 broke some tests because the guestfs_max_disks API isn't supported
by some backends, specifically ‘unix:’.  This makes failure of
guestfs_max_disks non-fatal.

Rich.