KDL-1.0.0-beta1 Release!!!

The first major-version KDL-Release is being prepared. KDL-1.0 will contain algorithms for rigid-body positions/velocity/force calculations and transformations. This part of KDL is not changed with respect to the previous versions.

There is a major rewrite and API change in the kinematic family section:
* The representation of a chain is changed.
* The usage of all the kinematic solvers is changed.