First Data, the payment processing company backed by private equity firm KKR, priced its shares below the range it was seeking. It had been aiming for a share price of between $18 and $20, but priced at $16, according to Bloomberg.  It's bad news for the individual companies, and bad news for Wall Street too, which was looking to the two deals as a bellwether for offerings in an otherwise weak year. Proceeds raised in US IPOs are down more than 44% from last year, and the number of deals is down by about 20%, according to Renaissance Capital, which analyzes IPOs.There's one...