First stab at using JNI to run olsrd.
Add Olsrd features
Bring olsrd submodule up to date.
First stab at using JNI instead of processes for olsrd.
Go back to external make system for olsrd and ...

1. Go back to external make system for olsrd

2. Use the revamped jni system -- libjniolsrd.so not
libolsrd.so
Go fully to olsrd in JNI
Name olsrd threads for easier debugging.
Use two threads to monitor IO
Prelink libservald.so for mdp to work properly.

For mdp to work properly, we also needed some changes
in the olsrd Make system. Bring that up-to-date.
Updated support for interrupt()ing the olsrd thread.
Refactor Olsrd public variable names.
Shutdown properly when olsrd thread interrupted.
Add an About screen

Fixes UI refinement issue 31 to create an
About screen for the UI.