QtIFW

adjust new 7zip files to fit into the installer frame work

 - to initialize the 7zlib supported archives we need this kind of
   registerMethods in RegisterArc.h and RegisterCodec.h

Change-Id: Ia4dec96c7641d9e0784ee5e6f7423544fc16aece
Reviewed-by: Karsten Heimrich <karsten.heimrich@nokia.com>