r3143: - Add user specified context to all uCM events. Users will not retrieve

r3143: - Add user specified context to all uCM events.  Users will not retrieve
  any events associated with the context after destroying the corresponding
  cm_id.
- Provide the ib_cm_init_qp_attr() call to userspace clients of the CM.
  This call may be used to set QP attributes properly before modifying the QP.
- Fixes some error handling syncrhonization and cleanup issues.
- Performs some minor code cleanup.
- Replaces the ucm_simple test program with a userspace version of cmpost.
- Updates DAPL to the new API.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>