Merge branch 'devel-2.4'

* devel-2.4:
  ht: Add new check for numbers
  Fix off-by-one bug in job serial generation
  Shorten some unbreakable lines in man pages
  Correct some spelling mistakes
  Fix bug in recreate-disks for DRBD instances
  Fix a lint warning
  KVM: configure bridged NICs at migration start
  Fix RAPI documentation regarding master role
  Fix bug in drbd8 replace disks on current nodes

Conflicts:
	lib/cmdlib.py: Trivial
	lib/opcodes.py: Trivial

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>