66985 - Do not open BODY for INPUT type=hidden. For compatibility
72639 - Discard nested FORMS
2749 - Enable Strict comment parsing.
Replace PRBools with bit operation.
nsScanner Append() should return nsresult not PRBool.
r=heikki
sr=jst
git-svn-id: svn://10.0.0.236/trunk@90964 18797224-902f-48f8-a5cc-f745e15eee43