exec option not supported in configuration files

Python's ConfParser class is implemented so that
- When an option has multiple form, the first encountered long name is the one to use in the conf file.
- When an option contains - in its name, the - should be tranformed in a _ in the conf file.
- When the destination variable name is specified, it is the variable name that should be user.

=> Added hints in help for ambiguous values.

This bug was fixed in the package vm-builder - 0.9-0ubuntu3

---------------
vm-builder (0.9-0ubuntu3) intrepid; urgency=low

  [ Johan Euphrosine ]
  * Fix exception when suite provided does not exist (LP: #281801)
    and provide unit test for it.

  [ Chuck Short ]
  * Added parameters required for EC2 plugin.
  * Use ec2_name instead of hostname when submitting an AMI.
  * Update xen_kernel_path and xen_ramdisk_path for intrepid.
  * Default to amazon kernels/ramdisk pairs for now.
  * Split out ec2 module into its own package. (LP: #284762)

  [ Nicolas Barcet ]
  * Error out if domain is undefined (LP: #280125)
  * Fix --dest so that it is actually used now (LP: #280091)
  * Fix -c handling, values are now used (LP: #279159)
  * Create /var/run/network to fix bug LP: #276365
  * Handle fsimage type vms (Xen) in fstab and (hopefully) libvirt (LP: #282109)
  * Components where not parsed correctly (LP: #283263)
  * preflight_check() was called twice in a row in vm.py for no aparant
    reasons
  * Change default suite to intrepid
  * Intrepid needs groot=uuid, else update-grub tries to outsmart us later on
    and it won't boot as it cannot guess the uuid right.
  * Couple fixes when calling devletters, which is a function
  * Double parenthesis removed in devicemap.tmpl
  * Added function isDomain to fix bug LP: #284746
  * Documented unusual conf name value in help to fix bug LP: #284614
  * Fixed a bug in set_defaults occuring on reading untyped value from the
    configuration file
  * Match ec2 vocabulary by adding option name and clarifying help
    (LP: #284765, LP: #285170, LP: #285165)
  * Added a check for xen hypervisor when ec2 is selected (LP: #285191)
  * Added checks for presence of bucket, access key and secret key for ec2
    (LP: #284757)
  * Older suite need 128 bit inode for grub to recognize os. Thanks to Albert
    Damen for the pointer (LP: #285093)
  * The libvirt plugin now errors out if used with something else than KVM, as
    nothing else is supported yet.
  * Write out disk info in vmware's .vmx, converting it to use template while
    at it (LP: #286487)
  * Add 'config.version = "8"' to vmware.tmpl to fix LP: #286531

  [ Mathias Gug ]
  * Fix --templates option.

  [ Soren Hansen ]
  * Create /var/{run,lock} on the root filesystem, just like d-i.

 -- Soren Hansen <email address hidden> Fri, 24 Oct 2008 13:15:23 +0200