Ongoing work due to refactoring mpls_control_interface.

Implemenation goal it is to provide orthogonality due to add or
removal of MPLS Routes by using either ioctl() or rtsock. Further,
to generalize MPLS PE Routes.

NOTE: This is only  an informal commit! Purpose of this operation is to show
NOTE: progress about ongoing work. Now, at this moment I'm working
NOTE:  to resolve this issue (see description above). Do not try
NOTE: to compile this stuff, it contains some bugs!!!