Add jessie; remove lucid and squeeze; fix build problem

Add jessie

- Jessie won't allow package revisions with 3.0 (native) format pkgs
  - Set format to 1.0 in submodule
- Fix (kludge) a build dep
- Clean up orphaned hardy config
- Submodule linux-tools add Build-Depends: libiberty-dev
- Rename KEYID variables:  Wheezy and Jessie share a key

Lucid isn't supported by new kernel packaging, which requires python
>= 2.7 (2.4 available), kernel-wedge >= 2.82 (2.29 available),
gcc-4.6 (4.4 available).

Squeeze (Debian 6.0) is reportedly obsolete.

Fix problem when leftover obsolete xenomai source pkgs break build
pbuild shell hook:  exit 1 when done to stop build
Update kernel submodule

Disable -indep packages when "none" featureset undefined
update kernel submodule

disable -indep targets if no 'none' featureset
Move /stamps/.gitignore to /.gitignore

Now /stamps/ can come empty
disable -indep targets if no 'none' featureset
testing ppa generation
WIP:  generate PPAs
More stamp fixing

All stamps now sort nicely and have more meaningful names.

Targets include codename/arch in output.
Update README