dh-7 package



I updated my old debian package to work with git head, its a little different than the existing cdbs based one.
It is using the more modern "dh-7" approach with a minimal debian/rules. It should also be fully multiarch ready, but I didn't test that yet.
It drops the gcc suffix in the package names, though we may want to add them again in case people want a clang version (does soci build with clang?).

this not really intended to be merged right now. Its more for comparison right now.

It also still needs a bit of work to be acceptable for the official debian archive. For one I have done almost no testing with it.
Also the copyright file needs to be checked, and possibly one could add autopkgtests starting mysql or postgres servers for better coverage (http://dep.debian.net/deps/dep8/).