Merge branch 'stable-2.4'

* stable-2.4:
  Release 2.4.0
  Small improvement to the ganeti man page
  Fix LUClusterRepairDiskSizes and rpc result usage
  Fix RPC mismatch in blockdev_getsize[s]
  RAPI: fix evacuate node resource
  Fix typo in kvm-ifup script
  NEWS: Replace smartquotes, start lines with uppercase
  Fix LU processor's GetECId
  Update NEWS and release 2.4.0 rc3
  Fix potential data-loss bug in disk wipe routines
  1-char comment typo fix
  Expand some acronyms, add to glossary

Conflicts:
        NEWS (trivial)

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: René Nussbaumer <rn@google.com>