Feature/docker support

I created docker files for most of the standard distros and completed the rpm packaging stuff. While working on this, I faced issues with boost libraries for which the use of boost > 1.53 triggered unresolvable dependencies for some distros version. So, the very few boost lib used throughout nsxlib are now bound statically. Anyway, this should not be a problem in a near future with our goal to get completely rid of boost. The deb and rpm should be tested.