Citrix Systems (CTXS), SolarWinds (SWI), Red Hat (RHT) and Palo Alto Networks (PANW) loom as well-positioned tech suppliers as corporate IT departments build next-generation data centers, says Robert W. Baird. Corporate spending on next-generation data centers and public cloud computing will be above average, says Baird Equity Research in its 2013 technology outlook. It forecasts "low- to mid-single-digit year-over-year growth in IT spend,