CComponentsHeader: add member initCCButtonFormSize()

This moves caclulation from initCCHeaderButtons() to its own
member.


Origin commit data
------------------
Commit: 41165d7cb2
Author: Thilo Graf <dbt@novatux.de>
Date: 2012-11-24 (Sat, 24 Nov 2012)

src/gui/components/cc.h

@@ -506,6 +506,7 @@ class CComponentsHeader : public CComponentsForm
 		void initCCHeaderButtons();
 		void initCCHItems();
 		void initCCHDefaultButtons();
+		void initCCButtonFormSize();
 		
 	protected:
 		void initVarHeader();