Customize upstream r19351 for kernel 3.5.7

- Initial git repository
  - Pull from svn://svn.debian.org/svn/kernel/dists/trunk/linux-tools/debian
  - Checkout r19351 (git rev. 784d0fc)
  - Create .gitignore
- New changelog entry
  - release 3.5-1mk for the Machinekit project
- Initial commit of README for github repo