- Added devel.ma/testdrafts

- Added devel.ma/testdrafts
- Added class zypp::CapMatch. Tri state value returned from
  Capability::matches.
- Added class zypp::Edition::Range. Defines ranges based on Rel
  and Edition. Provides method overlaps, to test whether two
  Edition::Ranges overlap (have at least one Edition in common).
- Added 'CapMatch Capability::matches( const Capability & rhs ) const'
  and adjusted capability implementations accordingly. (except splits)
- Added CapTraits (capability implementation) to define CapabilityImpl
  kinds and Ptr types.
- Added traits for RW/RWCOW_pointer, defining the wrapped smart pointer
  type and how to detect whether it is shared (refount != 1).