Two of the hard drive industry's biggest players will soon be just one company. European Union regulators have given a conditional thumbs-up to Western Digital's plans to snatch up Hitachi's storage division for $4.3 billion. The companies are the second and third largest hard disk manufacturers in the world (respectively) behind Seagate, which purchased Samsung's HDD division back in April. Out of concern for the quickly consolidating market, regulators only approved