Rename packages to machinekit and fix deps:  fixes #217

- Rename packages
- Reset to v. 0.1.0 (buildbot will replace minor version w/PR numbers)
- Blind search-and-replace in package descriptions; needs real attention
- Assume Maintainer: blame
- Replace Conflicts: with Breaks:, as recommended by Debian
- Remove Breaks: emc2 and add Breaks: linuxcnc
  - In pkgs depending on main 'machinekit' pkg, remove Breaks:/Replaces: