hwaf: add LCG_Configuration, LCG_Settings


git-svn-id: svn+ssh://svn.cern.ch/reps/atlasoff/AtlasCommonPolicy/trunk@570586 4525493e-7705-40b1-a816-d608a930855b
hwaf: add TEMPORARY bwd compat for xaod build_xyz -> atlas_xyz features


git-svn-id: svn+ssh://svn.cern.ch/reps/atlasoff/AtlasCommonPolicy/trunk@570688 4525493e-7705-40b1-a816-d608a930855b