ignore missing debug packages, they may not get generated (esp on noarch packages).

handle autodetected src packages with correct arch (src or nosrc)

- DB: update documentation and examples due to new ec2region element

- added support for the child element for
. With this a user can specify one or multiple
target regions for the EC2 image. Specifying multiple
elements creates multiple AMIs. The main convenience is that one
does not have to look for the aki-... cryptic name for the PVGrub
boot kernel as the value gets embedded in the generated manifest.
Supported values are: AP-Singapore, EU-West, US-East, US-West

support blacklisting of packages via onlyarch=""

report about all missing packages and abort afterwards, not at the first missing package.