VLOG updated to take session_id (WIP).
Further work on VLOG.
Completed remainder of VLOG Session ID update.
Bugfixes for builds with USE_VLOGGING undefined.
Further bugfix for builds with USE_VLOGGING undefined.
Merge remote-tracking branch 'origin/next' into sqlite

Conflicts:
	include/maidsafe/vault_manager/vault_config.h
	src/maidsafe/vault_manager/dispatcher.cc
	src/maidsafe/vault_manager/interprocess_messages.proto
	src/maidsafe/vault_manager/tools/commands/choose_path_to_bootstrap.cc
	src/maidsafe/vault_manager/tools/commands/choose_test_root_dir.cc
	src/maidsafe/vault_manager/tools/local_network_controller.h
	src/maidsafe/vault_manager/utils.cc
	src/maidsafe/vault_manager/vault_config.cc