Extends JGroups-2.5.2

This release is an initial import of original MChannel source code produced by AST Research Group of Universitat Rovira i Virgili (URV)

Minor changes have been made to the original code, including:

1. Conversion to Maven build and dependency system with standard directory structure
2. Changes to the way local the .properties files and graph resources are located to leverage Java System classloader when required to locate these in the classpath
3. Addition of .gitignore, README.md, JenkinsFile, and LICENCE

Publications of the original authors relating to MChannel are as follows:

1. "Moving routing protocols to the user space in MANET middleware". Pedro García-López, Raúl Gracia-Tinedo and Josep M. Banús Alsina. Journal of Network and Computer Applications, September, 2010, DOI.
2. "Topology-aware group communication middleware for MANETs". Pedro García-López, Raúl Gracia-Tinedo, Marc Espelt-Palau, Gerard Paris, Marcel Arrufat and Roc Messeguer. In Proceedings of the Fourth International Conference on COMmunication System softWAre and middlewaRE (COMSWARE 2009), DOI.
3. Final Degree Project of Marc Espelt did in 2009.
4. Master Thesis of Marcel Arrufat Arias did in 2008.
5. Master Thesis of Gerard París Aixalà did in 2008.