Removed sal/types.h

Change-Id: I068f480191d24a1f21fa9900f38095996a108f2d
Removed com/sun/star/uno/Reference.h

Change-Id: I1aa428e3436d8d2e6a1f683096519bde7d1ffde2
Merge ld:/home/gelma/dev/prg/for_riccardo/slot2 into for_riccardo