- enhanced isohybrid call to know about --uefi option.
  Creating an EFI capable hybrid iso requires the new isohybrid
  tool including patches by Steffen Winterfeldt as well as
  a correctly prepared ISO to write the information. This commit
  is only about calling isohybrid whereas the last commits was
  about preparation of the iso itself
- fixed grub2 prefix and root variable setup (bnc #799488)
- fixed layout of iso's and also make sure fixCatalog()
  is called
- Fix link in documentation
  + The repo for the EC2 tools moved from Virtualization:/Cloud to
    Cloud:/
- Remove getEc2Config_legacy method from XML
  + Change client code to use new getEC2Config method and work with the
    returned EC2ConfigData object
- Change getDisplayName implementation in XML
  + Use data from the new data structure to return the name
- Reorder some operations in the EC2 image creation step
  + Facilitate early exit by first checking the architecture
  + Eliminate all _lgacy calls from this code path
  + Move variable initialization closer to the place where the values
    are used
  + Handle all AWS account stuff towards the end of the method, when we
    need the information, as this is not treated as an error anyway