simplify bruce command line client

	modified:   bruce.spec.in
	modified:   bruce_noconfig.spec.in
	modified:   build_all
	modified:   doc/build_install.md
	modified:   doc/dev_info.md
	new file:   src/bruce/client/simple_bruce_client.cc
	renamed:    src/bruce/simple_client/simple_bruce_client.cc -> src/bruce/old_client/old_bruce_client.cc