Restored an old feature used in the prototype, a hack to discover the auto margin values in pixels in IE, and removing calculatePixelsPerInch that is now part of the lib.js.
Restored an old feature used in the prototype, a hack to discover the auto margin values in pixels in IE, and removing calculatePixelsPerInch that is now part of the lib.js.

git-svn-id: cc12c73f837f4c86aedaac3e81d294eae78e8bd7@4171 e969d3be-0e28-0410-a27f-dd5c76401a8b

darwin/firebug.lite