am ba944ccd: Doc change: update screens support table and remove outdated density/size metrics.

Merge commit 'ba944ccda3d61ccbe6061277fcc50c96fe2643f1' into gingerbread

* commit 'ba944ccda3d61ccbe6061277fcc50c96fe2643f1':
  Doc change: update screens support table and remove outdated density/size metrics.