Add missing ldconfig for libwinpr
    
    - Based on patch from Simone Caronni:
    - Update to the latest beta 1 refresh (1.1.0-beta+2013071101).
    - Remove obsolete defattr, Group and BuildRoot RPM tags for Fedora / RHEL 6+.
    - Move license file and documentation to libwinpr subpackage so any combination
      of installed packages result in the LICENSE file available.