move bruce_client directory to bruce/client

	modified:   bruce.spec.in
	modified:   bruce_noconfig.spec.in
	modified:   build_all
	renamed:    src/bruce_client/bruce_client.h -> src/bruce/client/bruce_client.h
	renamed:    src/bruce_client/libbruce_client.cc -> src/bruce/client/libbruce_client.cc