b=24416 debian packaging fixes - don't make a patch out of anything in /debian - exclude noise files from the debian built source tarball - fake debian/patche{s,d} for make dist - a few more reasons to run autogen.sh - figure out if dist tarball needs autogen.shs and include it if so - look for and run autogen.sh in the build subdir - make debdiff as part of make dist - add a debian/source/format file - mv the orig tarball and the debdiff to the debs dir - don't try to dist /debian for non-dpkg-using build targets Issue: LU-51 Change-Id: I041aaef217e107def86ce808d0e96fc6891e1dcd