title: In autolayout, how can I have view take up half of the screen, regardless of orientation?
body: <p>In portrait mode, I have a tableview on the left-side, and a webview on the right-side. They both take half of the screen. I have autolayout enabled.</p>
  
  <p>But when I rotate the screen to landscape mode, the tableview's width takes up less than half the screen's size, and the webview ends up taking more, instead of them being an even split.</p>
  
  <p>Why does this happen? How can I have the views take up only half the screen in regard to their widths, regardless of screen orientation?</p>