removing unneeded native frames and unneeded frame classes that these derived from

fixing checkbox and radiobutton state restore
fixing right btn click on dropdown
adding in initial work for accesskey
bug 17027,26296,27063,7559; carpool a=leaf; r=kmcclusk

layout/forms/nsHTMLButtonControlFrame.h

@@ -156,6 +156,8 @@ protected:
   PRBool mDidInit;
   nsButtonFrameRenderer mRenderer;
 
+  nsCOMPtr<nsIPresContext> mPresContext;
+
   //Resize Reflow OpitmizationSize;
   nsSize                mCacheSize;
   nsSize                mCachedMaxElementSize;