function log( repl, msg ) {
	if ( repl._quiet === false ) {
		repl._ostream.write( msg+'\n' );
	}
}
Writes a message to the REPL output stream.

## Notes

-   Automatically appends a newline character to a provide message.

@private
@param {REPL} repl - REPL instance
@param {string} msg - message