Update INSTALL.
Small fixes and cleanups in code.
Introduce Participant roles implementation stub.
Introduce MasterParticipantRole class.
Merge branch 'participant_role_object_pattern' of https://github.com/goofacz/gbee into participant_role_object_pattern

Conflicts:
	src/Makefile.am
	src/participant.hpp
	src/participant_core.cpp
	src/participant_core.hpp
	src/participant_role.cpp
	src/participant_role.hpp