kernel package submodule:  RTAI kernel fixes; bump release to -7da

- Disable parts of ACPI
- Move `Module.symvers` to `linux-headers` package
- Bump release to -7da
Rename kernel-rt-deb submodule to linux-ipipe-deb

More fitting name
Fix arch-indep package builds

- $(CA) gets $(BUILD_INDEP_ARCH)
- Hack chroot build target in build-binary-package target
Updates to linux-ipipe submodule

- Install dtbs files for ARM arch
- Update Vcs-* tags in changelog
Initial commit of dovetail-automata-keyring
updates in linux-latest submodule

.gitignore emacs cruft