(Reuters) - Dell Technologies on Thursday raised its offer to buy back shares tied to its interest in software maker VMware to $120 per share, still way short of the $300 price suggested by activist investor Carl Icahn. The computer maker in July offered to pay $21.7 billion, or $109 per share, in cash and stock to buy back shares tied to its interest in VMware, returning the computer maker to the stock market without an initial public offering...