livebuild: Make LIVEBUILD_ROOT a variable

Signed-off-by: Jan Blunck <jblunck@infradead.org>
livebuild: Skip top-level directory if it matches recipe name

If there is one directory with the recipe name in the tarball lets skip
into it before we check the configuration.

Signed-off-by: Jan Blunck <jblunck@infradead.org>
livebuild: Make LiveBuild.pm ignore recipe name base directory as well

Signed-off-by: Jan Blunck <jblunck@infradead.org>
Merge pull request #119 from jblunck/livebuild

Make livebuild step into top-level directory