Misc Controls API: Changes

The following header file(s) have changed between 3.0 and 3.1

**Table 1:** eikcapca.h
Type	Class	Change
New public method	`CEikCapCArray`	`TBool CalcItemIndexes(TInt& aTopItemIndex, TInt& aMiddleItems, TInt& aBottomItemIndex, TSize aAreaSize);`

**Table 2:** eikctgrp.h
Type	Class	Change
New enum value	`CEikControlGroup`	`EDisableMSKDrawing`
New protected method	`CEikControlGroup`	`void SetMSKVisibility(TBool aEnable);`